Closed SNB-hz closed 2 years ago
davidjgraph
commented
2 years ago "GitlabAuthServlet has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0"
there is your error...
SNB-hz
commented
2 years ago thanks for your reply, but I'm a beginner and don't fully understand... The image available at Dockerhub is built via this repo, no? The Java runtime andGitlabAuthServlet are part of said image, so the place to fix a mismatch would be this repo I think?
If this is not the right place to report such an issue, could you please point me in the direction of the right place?
davidjgraph
commented
2 years ago version 55 is java 11, version 52 is java 8. You're running java 8, run at least java 11....
I tried connecting my local drawio setup to my local Gitlab. This failed with Drawio displaying a "Unknown Error" due to the call to "/gitlab" returning a 404. The localhost log of the container showed the reason as a compilation / Java Runtime Version mismatch:
The image used:
Image: docker.io/jgraph/drawio:20.0.3 Image ID: docker.io/jgraph/drawio@sha256:2296ef64d36574451c9edf2b0e7c204de804ac51715a738ad11d2b20404ee5ea
The error in question:
24-Jun-2022 13:30:44.171 INFO [http-nio-8080-exec-9] org.apache.catalina.core.ApplicationContext.log Marking servlet [GitlabAuthServlet] as unavailable24-Jun-2022 13:30:44.172 SEVERE [http-nio-8080-exec-9] org.apache.catalina.core.StandardWrapperValve.invoke Allocate exception for servlet [GitlabAuthServlet] java.lang.UnsupportedClassVersionError: com/mxgraph/online/GitlabAuthServlet has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0 (unable to load class [com.mxgraph.online.GitlabAuthServlet]) at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2515) at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:877) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1413) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1257) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:535) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:516) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1071) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:789) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:128) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:119) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:356) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:867) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1760) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:750)