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inception-project / inception

INCEpTION provides a semantic annotation platform offering intelligent annotation assistance and knowledge management.
https://inception-project.github.io
Apache License 2.0
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Unable to upload large knowledge base #1616

Closed wojtuch closed 4 years ago

wojtuch commented 4 years ago

We've had inception v. 0.9.1 deployed for some time and been using it happily. However, our knowledge base grew enormously (over 3-4 times in size, up to ~270MB owl file) and our data team wanted to start using the new one. Upload didn't work but we decided to upgrade Inception to the latest version before trying to troubleshoot what was going on. I used the recent version from docker hub (0.14.2) but after the file has been uploaded through the UI, the following errors populate in the server logs:

2020-02-05 13:31:07 INFO [admin] ProjectServiceImpl - Created project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] ProjectServiceImpl - Created permission [MANAGER] for user [admin] on project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] ProjectServiceImpl - Created permission [CURATOR] for user [admin] on project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] ProjectServiceImpl - Created permission [ANNOTATOR] for user [admin] on project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.Token](293) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ADJ](244784) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ADP](244785) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ADV](244786) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [AUX](244787) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [CCONJ](244788) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [DET](244789) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [INTJ](244790) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [NOUN](244791) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [NUM](244792) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PART](244793) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PRON](244794) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PROPN](244795) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PUNCT](244796) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [SCONJ](244797) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [SYM](244798) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [VERB](244799) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [X](244800) in tagset [UD Universal POS tags (v2)](452) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.lexmorph.type.pos.POS](294) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [Coreference mentions](453) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [nam](244801) in tagset [Coreference mentions](453) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [Coreference relations](454) in project [ontology0.5.3.61](21)
2020-02-05 13:31:07 INFO [admin] AnnotationSchemaServiceImpl - Created tag [anaphoric](244802) in tagset [Coreference relations](454) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.coref.type.Coreference](295) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.semantics.type.SemArg](296) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.semantics.type.SemPred](297) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.syntax.type.chunk.Chunk](298) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.lexmorph.type.morph.MorphologicalFeatures](299) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.SurfaceForm](300) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [LOC](244803) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [LOCderiv](244804) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [LOCpart](244805) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ORG](244806) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ORGderiv](244807) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ORGpart](244808) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [OTH](244809) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [OTHderiv](244810) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [OTHpart](244811) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PER](244812) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PERderiv](244813) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [PERpart](244814) in tagset [Named Entity tags](455) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.ner.type.NamedEntity](301) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.Lemma](302) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.transform.type.SofaChangeAnnotation](303) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [Operation](456) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [replace](244815) in tagset [Operation](456) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [insert_before](244816) in tagset [Operation](456) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [insert_after](244817) in tagset [Operation](456) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [delete](244818) in tagset [Operation](456) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [acl](244819) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [advcl](244820) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [advmod](244821) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [amod](244822) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [appos](244823) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [aux](244824) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [case](244825) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [cc](244826) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [ccomp](244827) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [clf](244828) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [compound](244829) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [conj](244830) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [cop](244831) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [csubj](244832) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [dep](244833) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [det](244834) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [discourse](244835) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [dislocated](244836) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [expl](244837) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [fixed](244838) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [flat](244839) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [goeswith](244840) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [iobj](244841) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [list](244842) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [mark](244843) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [nmod](244844) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [nsubj](244845) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [nummod](244846) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [obj](244847) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [obl](244848) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [orphan](244849) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [parataxis](244850) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [punct](244851) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [reparandum](244852) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [root](244853) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [vocative](244854) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [xcomp](244855) in tagset [UD Universal Dependencies (v2)](457) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created layer [de.tudarmstadt.ukp.dkpro.core.api.syntax.type.dependency.Dependency](304) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tagset [Dependency flavors](458) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [basic](244856) in tagset [Dependency flavors](458) in project [ontology0.5.3.61](21)
2020-02-05 13:31:08 INFO [admin] AnnotationSchemaServiceImpl - Created tag [enhanced](244857) in tagset [Dependency flavors](458) in project [ontology0.5.3.61](21)
2020-02-05 13:58:52 WARN [admin] PageAccessSynchronizer - Thread 'http-nio-8080-exec-21' failed to acquire lock to page with id '10', attempted for 1 minutes out of allowed 1 minute. The thread that holds the lock has name 'http-nio-8080-exec-7'.
2020-02-05 13:58:52 WARN [admin] PageAccessSynchronizer - Thread 'http-nio-8080-exec-14' failed to acquire lock to page with id '10', attempted for 1 minutes out of allowed 1 minute. The thread that holds the lock has name 'http-nio-8080-exec-7'.
2020-02-05 13:58:52 WARN [admin] PageAccessSynchronizer - "http-nio-8080-exec-7" daemon prio=5 tid=45 state=RUNNABLE
org.apache.wicket.util.lang.Threads$ThreadDump: null
    at sun.nio.ch.FileDispatcherImpl.pwrite0(Native Method) ~[?:1.8.0_222]
    at sun.nio.ch.FileDispatcherImpl.pwrite(FileDispatcherImpl.java:66) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:89) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.write(IOUtil.java:65) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.writeInternal(FileChannelImpl.java:772) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:758) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.common.io.NioFile.write(NioFile.java:218) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.common.io.NioFile.writeBytes(NioFile.java:255) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.TxnStatusFile.setTxnStatus(TxnStatusFile.java:87) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.TripleStore.commit(TripleStore.java:810) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.flush(NativeSailStore.java:327) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.dataset(SailSourceModel.java:384) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.contains(SailSourceModel.java:229) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.add(SailSourceModel.java:240) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.model.impl.AbstractModel.add(AbstractModel.java:41) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractModel.addAll(AbstractModel.java:125) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.overflowToDisk(MemoryOverflowModel.java:277) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.checkMemoryOverflow(MemoryOverflowModel.java:243) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.add(MemoryOverflowModel.java:122) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.base.Changeset.approve(Changeset.java:232) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.add(SailSourceConnection.java:637) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.addStatement(SailSourceConnection.java:499) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.AbstractSailConnection.addStatement(AbstractSailConnection.java:437) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper.addStatement(SailConnectionWrapper.java:128) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.lucene.LuceneSailConnection.addStatement(LuceneSailConnection.java:184) ~[rdf4j-sail-lucene-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.sail.SailRepositoryConnection.addWithoutCommit(SailRepositoryConnection.java:311) ~[rdf4j-repository-sail-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:440) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFInserter.addStatement(RDFInserter.java:63) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.AbstractRDFInserter.handleStatement(AbstractRDFInserter.java:180) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.reportStatement(RDFXMLParser.java:966) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.processPropertyElt(RDFXMLParser.java:687) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.emptyElement(RDFXMLParser.java:403) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.endElement(SAXFilter.java:362) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:252) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:209) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.loadInputStreamOrReader(RDFLoader.java:241) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.load(RDFLoader.java:168) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:289) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl.importData(KnowledgeBaseServiceImpl.java:428) ~[inception-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$FastClassBySpringCGLIB$$77259834.invoke(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:685) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$EnhancerBySpringCGLIB$$2e75fab.importData(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    at org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:521) ~[wicket-ioc-8.6.1.jar!/:8.6.1]
    at com.sun.proxy.$Proxy212.importData(Unknown Source) ~[?:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.wizard.KnowledgeBaseCreationWizard$SchemaConfigurationStep.applyState(KnowledgeBaseCreationWizard.java:263) ~[inception-ui-kb-0.14.2.jar!/:?]
    at org.apache.wicket.extensions.wizard.FinishButton.onClick(FinishButton.java:62) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.extensions.wizard.WizardButton.onSubmit(WizardButton.java:105) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.extensions.wizard.AjaxWizardButtonBar$1.onSubmit(AjaxWizardButtonBar.java:90) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior$AjaxFormSubmitter.onSubmit(AjaxFormSubmitBehavior.java:223) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1308) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.process(Form.java:1001) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:825) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:176) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 13:58:52 WARN [admin] PageAccessSynchronizer - "http-nio-8080-exec-7" daemon prio=5 tid=45 state=RUNNABLE
org.apache.wicket.util.lang.Threads$ThreadDump: null
    at sun.nio.ch.FileDispatcherImpl.pwrite0(Native Method) ~[?:1.8.0_222]
    at sun.nio.ch.FileDispatcherImpl.pwrite(FileDispatcherImpl.java:66) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:89) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.write(IOUtil.java:65) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.writeInternal(FileChannelImpl.java:772) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:758) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.common.io.NioFile.write(NioFile.java:218) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.common.io.NioFile.writeBytes(NioFile.java:255) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.TxnStatusFile.setTxnStatus(TxnStatusFile.java:87) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.TripleStore.commit(TripleStore.java:810) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.flush(NativeSailStore.java:327) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.dataset(SailSourceModel.java:384) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.contains(SailSourceModel.java:229) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.add(SailSourceModel.java:240) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.model.impl.AbstractModel.add(AbstractModel.java:41) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractModel.addAll(AbstractModel.java:125) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.overflowToDisk(MemoryOverflowModel.java:277) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.checkMemoryOverflow(MemoryOverflowModel.java:243) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.add(MemoryOverflowModel.java:122) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.base.Changeset.approve(Changeset.java:232) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.add(SailSourceConnection.java:637) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.addStatement(SailSourceConnection.java:499) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.AbstractSailConnection.addStatement(AbstractSailConnection.java:437) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper.addStatement(SailConnectionWrapper.java:128) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.lucene.LuceneSailConnection.addStatement(LuceneSailConnection.java:184) ~[rdf4j-sail-lucene-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.sail.SailRepositoryConnection.addWithoutCommit(SailRepositoryConnection.java:311) ~[rdf4j-repository-sail-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:440) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFInserter.addStatement(RDFInserter.java:63) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.AbstractRDFInserter.handleStatement(AbstractRDFInserter.java:180) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.reportStatement(RDFXMLParser.java:966) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.processPropertyElt(RDFXMLParser.java:687) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.emptyElement(RDFXMLParser.java:403) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.endElement(SAXFilter.java:362) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:252) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:209) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.loadInputStreamOrReader(RDFLoader.java:241) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.load(RDFLoader.java:168) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:289) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl.importData(KnowledgeBaseServiceImpl.java:428) ~[inception-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$FastClassBySpringCGLIB$$77259834.invoke(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:685) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$EnhancerBySpringCGLIB$$2e75fab.importData(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    at org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:521) ~[wicket-ioc-8.6.1.jar!/:8.6.1]
    at com.sun.proxy.$Proxy212.importData(Unknown Source) ~[?:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.wizard.KnowledgeBaseCreationWizard$SchemaConfigurationStep.applyState(KnowledgeBaseCreationWizard.java:263) ~[inception-ui-kb-0.14.2.jar!/:?]
    at org.apache.wicket.extensions.wizard.FinishButton.onClick(FinishButton.java:62) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.extensions.wizard.WizardButton.onSubmit(WizardButton.java:105) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.extensions.wizard.AjaxWizardButtonBar$1.onSubmit(AjaxWizardButtonBar.java:90) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior$AjaxFormSubmitter.onSubmit(AjaxFormSubmitBehavior.java:223) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1308) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.process(Form.java:1001) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:825) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:176) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 13:58:52 ERROR [admin] DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.page.CouldNotLockPageException: Could not lock page 10. Attempt lasted 1 minute
    at org.apache.wicket.page.PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:168) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.page.PageAccessSynchronizer$2.getPage(PageAccessSynchronizer.java:246) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.DefaultMapperContext.getPageInstance(DefaultMapperContext.java:101) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider$Provision.resolve(PageProvider.java:412) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.getProvision(PageProvider.java:163) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.wasExpired(PageProvider.java:245) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.checkExpiration(AbstractBookmarkableMapper.java:312) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.processHybrid(AbstractBookmarkableMapper.java:258) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.mapRequest(AbstractBookmarkableMapper.java:341) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.mapper.CompoundRequestMapper.mapRequest(CompoundRequestMapper.java:147) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.resolveRequestHandler(RequestCycle.java:193) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:243) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 13:58:52 ERROR [admin] DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.page.CouldNotLockPageException: Could not lock page 10. Attempt lasted 1 minute
    at org.apache.wicket.page.PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:168) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.page.PageAccessSynchronizer$2.getPage(PageAccessSynchronizer.java:246) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.DefaultMapperContext.getPageInstance(DefaultMapperContext.java:101) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider$Provision.resolve(PageProvider.java:412) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.getProvision(PageProvider.java:163) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.wasExpired(PageProvider.java:245) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.checkExpiration(AbstractBookmarkableMapper.java:312) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.processListener(AbstractBookmarkableMapper.java:305) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.mapRequest(AbstractBookmarkableMapper.java:346) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.mapper.CompoundRequestMapper.mapRequest(CompoundRequestMapper.java:147) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.resolveRequestHandler(RequestCycle.java:193) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:243) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 13:59:52 WARN [admin] PageAccessSynchronizer - Thread 'http-nio-8080-exec-24' failed to acquire lock to page with id '10', attempted for 1 minutes out of allowed 1 minute. The thread that holds the lock has name 'http-nio-8080-exec-7'.
2020-02-05 13:59:52 WARN [admin] PageAccessSynchronizer - "http-nio-8080-exec-7" daemon prio=5 tid=45 state=RUNNABLE
org.apache.wicket.util.lang.Threads$ThreadDump: null
    at sun.nio.ch.FileDispatcherImpl.pwrite0(Native Method) ~[?:1.8.0_222]
    at sun.nio.ch.FileDispatcherImpl.pwrite(FileDispatcherImpl.java:66) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:89) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.write(IOUtil.java:65) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.writeInternal(FileChannelImpl.java:772) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:758) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.common.io.NioFile.write(NioFile.java:218) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.common.io.NioFile.writeBytes(NioFile.java:255) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.TxnStatusFile.setTxnStatus(TxnStatusFile.java:87) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.TripleStore.startTransaction(TripleStore.java:795) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.startTriplestoreTransaction(NativeSailStore.java:406) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.addStatement(NativeSailStore.java:420) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.approve(NativeSailStore.java:389) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.add(SailSourceModel.java:251) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.model.impl.AbstractModel.add(AbstractModel.java:41) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractModel.addAll(AbstractModel.java:125) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.overflowToDisk(MemoryOverflowModel.java:277) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.checkMemoryOverflow(MemoryOverflowModel.java:243) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.add(MemoryOverflowModel.java:122) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.base.Changeset.approve(Changeset.java:232) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.add(SailSourceConnection.java:637) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.addStatement(SailSourceConnection.java:499) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.AbstractSailConnection.addStatement(AbstractSailConnection.java:437) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper.addStatement(SailConnectionWrapper.java:128) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.lucene.LuceneSailConnection.addStatement(LuceneSailConnection.java:184) ~[rdf4j-sail-lucene-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.sail.SailRepositoryConnection.addWithoutCommit(SailRepositoryConnection.java:311) ~[rdf4j-repository-sail-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:440) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFInserter.addStatement(RDFInserter.java:63) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.AbstractRDFInserter.handleStatement(AbstractRDFInserter.java:180) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.reportStatement(RDFXMLParser.java:966) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.processPropertyElt(RDFXMLParser.java:687) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.emptyElement(RDFXMLParser.java:403) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.endElement(SAXFilter.java:362) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:252) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:209) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.loadInputStreamOrReader(RDFLoader.java:241) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.load(RDFLoader.java:168) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:289) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl.importData(KnowledgeBaseServiceImpl.java:428) ~[inception-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$FastClassBySpringCGLIB$$77259834.invoke(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:685) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$EnhancerBySpringCGLIB$$2e75fab.importData(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    at org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:521) ~[wicket-ioc-8.6.1.jar!/:8.6.1]
    at com.sun.proxy.$Proxy212.importData(Unknown Source) ~[?:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.wizard.KnowledgeBaseCreationWizard$SchemaConfigurationStep.applyState(KnowledgeBaseCreationWizard.java:263) ~[inception-ui-kb-0.14.2.jar!/:?]
    at org.apache.wicket.extensions.wizard.FinishButton.onClick(FinishButton.java:62) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.extensions.wizard.WizardButton.onSubmit(WizardButton.java:105) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.extensions.wizard.AjaxWizardButtonBar$1.onSubmit(AjaxWizardButtonBar.java:90) ~[wicket-extensions-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior$AjaxFormSubmitter.onSubmit(AjaxFormSubmitBehavior.java:223) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1308) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.process(Form.java:1001) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:825) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:176) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 13:59:53 ERROR [admin] DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.page.CouldNotLockPageException: Could not lock page 10. Attempt lasted 1 minute
    at org.apache.wicket.page.PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:168) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.page.PageAccessSynchronizer$2.getPage(PageAccessSynchronizer.java:246) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.DefaultMapperContext.getPageInstance(DefaultMapperContext.java:101) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider$Provision.resolve(PageProvider.java:412) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.getProvision(PageProvider.java:163) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.wasExpired(PageProvider.java:245) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.checkExpiration(AbstractBookmarkableMapper.java:312) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.processListener(AbstractBookmarkableMapper.java:305) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.mapRequest(AbstractBookmarkableMapper.java:346) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.mapper.CompoundRequestMapper.mapRequest(CompoundRequestMapper.java:147) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.resolveRequestHandler(RequestCycle.java:193) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:243) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 14:00:31 ERROR [admin] ProjectPage - Error: iriString must not be null
java.lang.NullPointerException: iriString must not be null
    at java.util.Objects.requireNonNull(Objects.java:228) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.model.impl.SimpleIRI.setIRIString(SimpleIRI.java:71) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.SimpleIRI.<init>(SimpleIRI.java:63) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractValueFactory.createIRI(AbstractValueFactory.java:86) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.ui.kb.project.RootConceptsPanel.actionNewRootConcept(RootConceptsPanel.java:110) ~[inception-ui-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.clarin.webanno.support.lambda.LambdaAjaxLink.onClick(LambdaAjaxLink.java:66) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.wicket.ajax.markup.html.AjaxLink$1.onEvent(AjaxLink.java:85) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) [wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 14:00:31 ERROR [admin] ApplicationPageBase - admin: Error: iriString must not be null
2020-02-05 14:00:34 ERROR [admin] ProjectPage - Error: iriString must not be null
java.lang.NullPointerException: iriString must not be null
    at java.util.Objects.requireNonNull(Objects.java:228) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.model.impl.SimpleIRI.setIRIString(SimpleIRI.java:71) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.SimpleIRI.<init>(SimpleIRI.java:63) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractValueFactory.createIRI(AbstractValueFactory.java:86) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.ui.kb.project.RootConceptsPanel.actionNewRootConcept(RootConceptsPanel.java:110) ~[inception-ui-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.clarin.webanno.support.lambda.LambdaAjaxLink.onClick(LambdaAjaxLink.java:66) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.wicket.ajax.markup.html.AjaxLink$1.onEvent(AjaxLink.java:85) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) [wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 14:00:34 ERROR [admin] ApplicationPageBase - admin: Error: iriString must not be null
2020-02-05 14:04:48 WARN [admin] PageAccessSynchronizer - Thread 'http-nio-8080-exec-75' failed to acquire lock to page with id '40', attempted for 1 minutes out of allowed 1 minute. The thread that holds the lock has name 'http-nio-8080-exec-43'.
2020-02-05 14:04:48 WARN [admin] PageAccessSynchronizer - "http-nio-8080-exec-43" daemon prio=5 tid=131 state=RUNNABLE
org.apache.wicket.util.lang.Threads$ThreadDump: null
    at sun.nio.ch.FileDispatcherImpl.pwrite0(Native Method) ~[?:1.8.0_222]
    at sun.nio.ch.FileDispatcherImpl.pwrite(FileDispatcherImpl.java:66) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:89) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.write(IOUtil.java:65) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.writeInternal(FileChannelImpl.java:772) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:758) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.common.io.NioFile.write(NioFile.java:218) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.common.io.NioFile.writeBytes(NioFile.java:255) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.TxnStatusFile.setTxnStatus(TxnStatusFile.java:87) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.TripleStore.startTransaction(TripleStore.java:795) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.startTriplestoreTransaction(NativeSailStore.java:406) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.addStatement(NativeSailStore.java:420) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.approve(NativeSailStore.java:389) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.add(SailSourceModel.java:251) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.model.impl.AbstractModel.add(AbstractModel.java:41) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractModel.addAll(AbstractModel.java:125) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.overflowToDisk(MemoryOverflowModel.java:277) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.checkMemoryOverflow(MemoryOverflowModel.java:243) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.add(MemoryOverflowModel.java:122) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.base.Changeset.approve(Changeset.java:232) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.add(SailSourceConnection.java:637) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.addStatement(SailSourceConnection.java:499) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.AbstractSailConnection.addStatement(AbstractSailConnection.java:437) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper.addStatement(SailConnectionWrapper.java:128) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.lucene.LuceneSailConnection.addStatement(LuceneSailConnection.java:184) ~[rdf4j-sail-lucene-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.sail.SailRepositoryConnection.addWithoutCommit(SailRepositoryConnection.java:311) ~[rdf4j-repository-sail-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:440) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFInserter.addStatement(RDFInserter.java:63) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.AbstractRDFInserter.handleStatement(AbstractRDFInserter.java:180) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.reportStatement(RDFXMLParser.java:966) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.processNodeElt(RDFXMLParser.java:464) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.startElement(RDFXMLParser.java:355) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.reportDeferredStartElement(SAXFilter.java:304) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.startElement(SAXFilter.java:235) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:252) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:209) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.loadInputStreamOrReader(RDFLoader.java:241) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.load(RDFLoader.java:168) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:289) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl.importData(KnowledgeBaseServiceImpl.java:428) ~[inception-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$FastClassBySpringCGLIB$$77259834.invoke(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:685) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$EnhancerBySpringCGLIB$$2e75fab.importData(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    at org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:521) ~[wicket-ioc-8.6.1.jar!/:8.6.1]
    at com.sun.proxy.$Proxy212.importData(Unknown Source) ~[?:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.KnowledgeBaseDetailsPanel.actionSave(KnowledgeBaseDetailsPanel.java:180) ~[inception-ui-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.KnowledgeBaseDetailsPanel.access$000(KnowledgeBaseDetailsPanel.java:56) ~[inception-ui-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.KnowledgeBaseDetailsPanel$1.onAfterSubmit(KnowledgeBaseDetailsPanel.java:128) ~[inception-ui-kb-0.14.2.jar!/:?]
    at org.apache.wicket.ajax.markup.html.form.AjaxButton$1.onAfterSubmit(AjaxButton.java:119) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior$AjaxFormSubmitter.onAfterSubmit(AjaxFormSubmitBehavior.java:229) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1319) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.process(Form.java:1001) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:825) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:176) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 14:04:48 ERROR [admin] DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.page.CouldNotLockPageException: Could not lock page 40. Attempt lasted 1 minute
    at org.apache.wicket.page.PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:168) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.page.PageAccessSynchronizer$2.getPage(PageAccessSynchronizer.java:246) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.DefaultMapperContext.getPageInstance(DefaultMapperContext.java:101) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider$Provision.resolve(PageProvider.java:412) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.getProvision(PageProvider.java:163) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.wasExpired(PageProvider.java:245) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.checkExpiration(AbstractBookmarkableMapper.java:312) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.processListener(AbstractBookmarkableMapper.java:305) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.mapRequest(AbstractBookmarkableMapper.java:346) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.mapper.CompoundRequestMapper.mapRequest(CompoundRequestMapper.java:147) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.resolveRequestHandler(RequestCycle.java:193) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:243) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 14:05:49 WARN [admin] PageAccessSynchronizer - Thread 'http-nio-8080-exec-47' failed to acquire lock to page with id '40', attempted for 1 minute out of allowed 1 minute. The thread that holds the lock has name 'http-nio-8080-exec-43'.
2020-02-05 14:05:49 WARN [admin] PageAccessSynchronizer - "http-nio-8080-exec-43" daemon prio=5 tid=131 state=RUNNABLE
org.apache.wicket.util.lang.Threads$ThreadDump: null
    at sun.nio.ch.FileDispatcherImpl.pwrite0(Native Method) ~[?:1.8.0_222]
    at sun.nio.ch.FileDispatcherImpl.pwrite(FileDispatcherImpl.java:66) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:89) ~[?:1.8.0_222]
    at sun.nio.ch.IOUtil.write(IOUtil.java:65) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.writeInternal(FileChannelImpl.java:772) ~[?:1.8.0_222]
    at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:758) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.common.io.NioFile.write(NioFile.java:218) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.common.io.NioFile.writeBytes(NioFile.java:255) ~[rdf4j-util-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.TxnStatusFile.setTxnStatus(TxnStatusFile.java:87) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.TripleStore.commit(TripleStore.java:810) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.NativeSailStore$NativeSailSink.flush(NativeSailStore.java:327) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.dataset(SailSourceModel.java:384) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.contains(SailSourceModel.java:229) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.SailSourceModel.add(SailSourceModel.java:240) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.model.impl.AbstractModel.add(AbstractModel.java:41) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractModel.addAll(AbstractModel.java:125) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.overflowToDisk(MemoryOverflowModel.java:277) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.checkMemoryOverflow(MemoryOverflowModel.java:243) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.nativerdf.MemoryOverflowModel.add(MemoryOverflowModel.java:122) ~[rdf4j-sail-nativerdf-2.5.1-inception-1.jar!/:2.5.1-inception-1+7e1d007]
    at org.eclipse.rdf4j.sail.base.Changeset.approve(Changeset.java:232) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.add(SailSourceConnection.java:637) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.base.SailSourceConnection.addStatement(SailSourceConnection.java:499) ~[rdf4j-sail-base-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.AbstractSailConnection.addStatement(AbstractSailConnection.java:437) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.helpers.SailConnectionWrapper.addStatement(SailConnectionWrapper.java:128) ~[rdf4j-sail-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.sail.lucene.LuceneSailConnection.addStatement(LuceneSailConnection.java:184) ~[rdf4j-sail-lucene-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.sail.SailRepositoryConnection.addWithoutCommit(SailRepositoryConnection.java:311) ~[rdf4j-repository-sail-2.5.1-inception-1.jar!/:2.5.1-inception-1+8dce3bc]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:440) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFInserter.addStatement(RDFInserter.java:63) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.AbstractRDFInserter.handleStatement(AbstractRDFInserter.java:180) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.reportStatement(RDFXMLParser.java:966) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.processNodeElt(RDFXMLParser.java:464) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.startElement(RDFXMLParser.java:355) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.reportDeferredStartElement(SAXFilter.java:304) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.SAXFilter.startElement(SAXFilter.java:235) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) ~[xercesImpl-2.9.1.jar!/:?]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:252) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.rio.rdfxml.RDFXMLParser.parse(RDFXMLParser.java:209) ~[rdf4j-rio-rdfxml-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.loadInputStreamOrReader(RDFLoader.java:241) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.util.RDFLoader.load(RDFLoader.java:168) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.repository.base.AbstractRepositoryConnection.add(AbstractRepositoryConnection.java:289) ~[rdf4j-repository-api-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl.importData(KnowledgeBaseServiceImpl.java:428) ~[inception-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$FastClassBySpringCGLIB$$77259834.invoke(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:685) ~[spring-aop-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at de.tudarmstadt.ukp.inception.kb.KnowledgeBaseServiceImpl$$EnhancerBySpringCGLIB$$2e75fab.importData(<generated>) ~[inception-kb-0.14.2.jar!/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_222]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_222]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_222]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_222]
    at org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:521) ~[wicket-ioc-8.6.1.jar!/:8.6.1]
    at com.sun.proxy.$Proxy212.importData(Unknown Source) ~[?:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.KnowledgeBaseDetailsPanel.actionSave(KnowledgeBaseDetailsPanel.java:180) ~[inception-ui-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.KnowledgeBaseDetailsPanel.access$000(KnowledgeBaseDetailsPanel.java:56) ~[inception-ui-kb-0.14.2.jar!/:?]
    at de.tudarmstadt.ukp.inception.ui.kb.project.KnowledgeBaseDetailsPanel$1.onAfterSubmit(KnowledgeBaseDetailsPanel.java:128) ~[inception-ui-kb-0.14.2.jar!/:?]
    at org.apache.wicket.ajax.markup.html.form.AjaxButton$1.onAfterSubmit(AjaxButton.java:119) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior$AjaxFormSubmitter.onAfterSubmit(AjaxFormSubmitBehavior.java:229) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1319) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.process(Form.java:1001) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:825) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:176) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:127) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:598) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.internalInvoke(ListenerRequestHandler.java:306) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invoke(ListenerRequestHandler.java:280) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:222) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
2020-02-05 14:05:49 ERROR [admin] DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.page.CouldNotLockPageException: Could not lock page 40. Attempt lasted 1 minute
    at org.apache.wicket.page.PageAccessSynchronizer.lockPage(PageAccessSynchronizer.java:168) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.page.PageAccessSynchronizer$2.getPage(PageAccessSynchronizer.java:246) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.DefaultMapperContext.getPageInstance(DefaultMapperContext.java:101) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider$Provision.resolve(PageProvider.java:412) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.getProvision(PageProvider.java:163) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.handler.PageProvider.wasExpired(PageProvider.java:245) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.checkExpiration(AbstractBookmarkableMapper.java:312) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.processListener(AbstractBookmarkableMapper.java:305) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.core.request.mapper.AbstractBookmarkableMapper.mapRequest(AbstractBookmarkableMapper.java:346) ~[wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.mapper.CompoundRequestMapper.mapRequest(CompoundRequestMapper.java:147) ~[wicket-request-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.resolveRequestHandler(RequestCycle.java:193) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:243) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70) [wicket-native-websocket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) [wicket-core-8.6.1.jar!/:8.6.1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:186) [spring-orm-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at de.tudarmstadt.ukp.clarin.webanno.support.logging.LoggingFilter.doFilter(LoggingFilter.java:52) [webanno-support-4.0.0-beta-9.jar!/:?]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.2.0.RELEASE.jar!/:5.2.0.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar!/:5.2.1.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar!/:9.0.27]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]

I found the 100MB spring boot upload limit so I tried to do a bit of hacking myself, increased it to 500MB and rebuild the docker image. It didn't help, I could provide the logs if you need but they look very alike.

Thanks in advance!

reckart commented 4 years ago

I'm afraid, the RDF storage implementation by RDF4J which we use für local knowledge bases does not scale very well. If you have a large KB, I would recommend trying to store it in Virtuoso (or maybe Fuseki) and accessing it as a remote KB in INCEpTION. However, INCEpTION does not support editing remote KBs (yet) - so you can only access it read-only.

wojtuch commented 4 years ago

thanks for a rapid answer! we have a virtuoso endpoint, my only concern is that it is password-protected and I guess we'd need to embed the base auth credentials in the endpoint url? e.g. https://user:password@virtuoso-host.example.com would you say it's a safe way to go?

reckart commented 4 years ago

There are many relevant factors affecting the security risk. You have to make a risk assessment yourself depending on your environment.

reckart commented 4 years ago

Anyway. Regarding the original question and the stack traces.

wojtuch commented 4 years ago

Thanks once again! I converted the 260MB owl file to a <100MB n3 file and tried uploading it but it failed with a nicely caught error (no stack trace): 2020-02-06 09:52:45 ERROR [admin] ParseErrorLogger - [Rio fatal] Expected an RDF value here, found '' I had a light bulb moment and after having another look at logs from yesterday, I noticed 2020-02-05 14:00:31 ERROR [admin] ProjectPage - Error: iriString must not be null which looks at least a little bit similar. I tried investigating for possible reasons and found that we have pure unicode surface forms which raised suspicions that maybe they start with code points which are not handled correctly (https://github.com/eclipse/rdf4j/blob/master/core/rio/turtle/src/main/java/org/eclipse/rdf4j/rio/turtle/TurtleParser.java#L592). Removing 2 of them (only so many I could find) caused the upload worker to crash but only after 10 minutes but without having complained about any empty / null values.

I concluded that this might indeed be a size problem and tried setting up a KB via virtuoso connection and everything seems to be working correctly.

Weird thing is that I'm able to parse the triples using Rio locally without any problems but this might be some strange cross-system encoding issues.

reckart commented 4 years ago

The iriString must not be null should be unrelated to the import. See the stack trace:

java.lang.NullPointerException: iriString must not be null
    at java.util.Objects.requireNonNull(Objects.java:228) ~[?:1.8.0_222]
    at org.eclipse.rdf4j.model.impl.SimpleIRI.setIRIString(SimpleIRI.java:71) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.SimpleIRI.<init>(SimpleIRI.java:63) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at org.eclipse.rdf4j.model.impl.AbstractValueFactory.createIRI(AbstractValueFactory.java:86) ~[rdf4j-model-2.5.1-inception-1.jar!/:2.5.1-inception-1+47c031e]
    at de.tudarmstadt.ukp.inception.ui.kb.project.RootConceptsPanel.actionNewRootConcept(RootConceptsPanel.java:110) ~[inception-ui-kb-0.14.2.jar!/:?]
    ...

The error was generated by actionNewRootConcept which means a user in the UI tried to add an empty IRI as one of the KB's root concepts.

So the RIO error should be unrelated to this iriString must not be null - at least considering the stack trace.

reckart commented 4 years ago

Maybe try another format? Turtle?

wojtuch commented 4 years ago

Strangely enough we didn't try to do anything via UI, just started the import process, so I assumed it could be connected.

In the end it seems to have had to do with the encoding. Looks like after removing the unicode-only literals the upload finished successfully (much later as you noted)

reckart commented 4 years ago

Ok, then I guess we can close this issue.