java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [io.netty.handler.timeout.IdleStateEvent]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.

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Can't overwrite cause with java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load org.apache.activemq.broker.region.Queue$8. The eventual following stack trace is caused by an error
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following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
via GitHub by marcelalburg
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following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
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Can't overwrite cause with java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [com.pi4j.wiringpi.GpioInterruptEvent]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
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via accumulo-user by Keith Turner, 6 months ago
Illegal access: this web application instance has been stopped already. Could not load org.apache.zookeeper.proto.SetWatches. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [io.netty.handler.timeout.IdleStateEvent]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1343)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1206)
at io.netty.handler.timeout.IdleStateHandler$AllIdleTimeoutTask.run(IdleStateHandler.java:453)
at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)
at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:120)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:358)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
at java.lang.Thread.run(Thread.java:745)

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