java.lang.IllegalStateException

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    • 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 java.lang.Throwable.initCause(Throwable.java:457)[na:1.8.0_72] at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1344)[na:na] at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1206)[na:na] at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)[na:na] at io.netty.handler.timeout.IdleStateHandler$AllIdleTimeoutTask.run(IdleStateHandler.java:453)[netty-handler-4.0.33.Final.jar:4.0.33.Final] at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)[netty-common-4.0.33.Final.jar:4.0.33.Final] at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:120)[netty-common-4.0.33.Final.jar:4.0.33.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:358)[netty-common-4.0.33.Final.jar:4.0.33.Final] at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:268)[netty-all-4.0.23.Final.jar:4.0.23.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)[netty-common-4.0.33.Final.jar:4.0.33.Final] at java.lang.Thread.run(Thread.java:745)[na:1.8.0_72] Caused by: java.lang.ClassNotFoundException: null at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1343)[na:na] ... 9 more

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