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TypeFox / yang-vscode

A VS Code Extension for YANG
Apache License 2.0
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Millions of getReferenceDescription errors #18

Open Hubro opened 4 years ago

Hubro commented 4 years ago

Whenever I make any changes to a YANG file, even if I just type a space, an error pops up in the Output tab for "Yang Language Server". This happens on literally every file change, so if I type in a few words, dozens of errors will be spewing into the Output tab of the panel. The panel opens automatically to the Output tab any time this happens too, so I can't just ignore this. It's extremely distracting to try to type while hundreds of errors are racing by right next to my editor.

The errors all look just like this:

[Error - 2:16:58 PM] java.lang.IllegalStateException: getReferenceDescriptions file:///home/tomas/Dropbox/REDACTED/foo.yang: java.lang.IllegalStateException: getReferenceDescriptions file:///home/tomas/Dropbox/REDACTED/foo.yang
    at org.eclipse.xtext.build.Indexer$ResolvedResourceDescription.getReferenceDescriptions(Indexer.java:182)
    at io.typefox.yang.ide.codelens.CodeLensService.lambda$computeCodeLenses$0(CodeLensService.java:119)
    at org.eclipse.xtext.xbase.lib.internal.FunctionDelegate.apply(FunctionDelegate.java:42)
    at com.google.common.collect.Iterators$8.transform(Iterators.java:817)
    at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
    at java.lang.Iterable.forEach(Iterable.java:74)
    at io.typefox.yang.ide.codelens.CodeLensService.computeCodeLenses(CodeLensService.java:127)
    at org.eclipse.xtext.ide.server.LanguageServerImpl.lambda$null$45(LanguageServerImpl.java:756)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:283)
    at org.eclipse.xtext.ide.server.LanguageServerImpl.lambda$codeLens$46(LanguageServerImpl.java:760)
    at org.eclipse.xtext.ide.server.concurrent.ReadRequest.lambda$run$0(ReadRequest.java:37)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

I have had this problem before, but it went away. Now recently it has started happening again, so I'm assuming it is triggered by something specific in my YANG code, but I have no idea what.

I'm using YANG for Visual Studio Code 1.7.0 (typefox.yang-vscode)

Version: 1.43.2
Commit: 0ba0ca52957102ca3527cf479571617f0de6ed50
Date: 2020-03-24T07:52:11.516Z
Electron: 7.1.11
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Linux x64 5.5.7-arch1-1-audio-patched

Is there any more information I can provide?

Hubro commented 4 years ago

I have been working without the extension for the last couple of months. Decided to try it again today, but it still automatically opens my panel and pumps out a ton of errors. Different errors this time, though. Here is a sample:

Jun 22, 2020 12:38:22 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 235
[Warn  - 12:38:22 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 15
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Exception in thread "AsyncAppender-Dispatcher-Thread-2" Jun 22, 2020 12:38:22 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 236
java.lang.NullPointerException
    at org.eclipse.sprotty.xtext.launch.DiagramServerLauncher$LanguageClientAppender.lambda$append$0(DiagramServerLauncher.java:71)
    at org.eclipse.xtext.xbase.lib.ObjectExtensions.operator_doubleArrow(ObjectExtensions.java:139)
    at org.eclipse.sprotty.xtext.launch.DiagramServerLauncher$LanguageClientAppender.append(DiagramServerLauncher.java:109)
    at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
    at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
    at org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:586)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:38:48 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 291
Jun 22, 2020 12:38:49 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 293
Jun 22, 2020 12:38:54 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 321
Jun 22, 2020 12:38:56 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 334
[Warn  - 12:38:56 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 41
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:38:57 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 339
[Warn  - 12:38:57 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 46
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:38:57 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 343
[Warn  - 12:38:57 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 48
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:38:58 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 346
[Warn  - 12:38:58 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 51
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:38:58 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 350
[Warn  - 12:38:58 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 53
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:39:10 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 361
[Warn  - 12:39:10 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 56
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:39:11 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 366
Jun 22, 2020 12:39:11 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 367
[Warn  - 12:39:11 PM] Highlighting diagram element failed: java.lang.IndexOutOfBoundsException: Position [
  line = 301
  character = 60
]
    at org.eclipse.xtext.ide.server.Document.getOffSet(Document.java:75)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.lambda$documentHighlight$2(DiagramLanguageServer.java:176)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:412)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Jun 22, 2020 12:39:35 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 386
Jun 22, 2020 12:39:35 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation
WARNING: Unmatched cancel notification for request id 388
Jun 22, 2020 12:40:22 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint fallbackResponseError
SEVERE: Internal error: java.lang.reflect.InvocationTargetException
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    ... 12 more
Caused by: java.lang.IllegalStateException: A different resource with the URI 'file:///[REDACTED].yang' was already registered.
    at org.eclipse.xtext.resource.XtextResourceSet.registerURI(XtextResourceSet.java:137)
    at org.eclipse.xtext.resource.XtextResourceSet$ResourcesList.inverseAdd(XtextResourceSet.java:152)
    at org.eclipse.xtext.resource.XtextResourceSet$ResourcesList.inverseAdd(XtextResourceSet.java:146)
    at org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:286)
    at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:303)
    at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.createResource(ResourceSetImpl.java:435)
    at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandCreateResource(ResourceSetImpl.java:243)
    at org.eclipse.xtext.resource.XtextResourceSet.getResource(XtextResourceSet.java:260)
    at org.eclipse.xtext.ide.server.ProjectManager.getResource(ProjectManager.java:167)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:410)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    ... 16 more

[Error - 12:40:22 PM] Request textDocument/documentHighlight failed.
  Message: Internal error.
  Code: -32603 
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
    at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
    at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
    at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
    at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
    ... 12 more
Caused by: java.lang.IllegalStateException: A different resource with the URI 'file:///[REDACTED].yang' was already registered.
    at org.eclipse.xtext.resource.XtextResourceSet.registerURI(XtextResourceSet.java:137)
    at org.eclipse.xtext.resource.XtextResourceSet$ResourcesList.inverseAdd(XtextResourceSet.java:152)
    at org.eclipse.xtext.resource.XtextResourceSet$ResourcesList.inverseAdd(XtextResourceSet.java:146)
    at org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:286)
    at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:303)
    at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.createResource(ResourceSetImpl.java:435)
    at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandCreateResource(ResourceSetImpl.java:243)
    at org.eclipse.xtext.resource.XtextResourceSet.getResource(XtextResourceSet.java:260)
    at org.eclipse.xtext.ide.server.ProjectManager.getResource(ProjectManager.java:167)
    at org.eclipse.xtext.ide.server.WorkspaceManager.doRead(WorkspaceManager.java:410)
    at org.eclipse.sprotty.xtext.ls.DiagramLanguageServer.documentHighlight(DiagramLanguageServer.java:194)
    ... 16 more

Despite these errors the extension seems to work fine, so if you could just add an option to squelch the error messages, I could keep using the extension... For now I'll have to manage without it :disappointed: