Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via GitHub by JuKu
, 1 year ago
This exception has no message.
io.netty.channel.group.ChannelGroupException: 	at io.netty.channel.group.DefaultChannelGroupFuture$1.operationComplete(DefaultChannelGroupFuture.java:72)	at io.netty.channel.group.DefaultChannelGroupFuture$1.operationComplete(DefaultChannelGroupFuture.java:47)	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:514)	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:488)	at io.netty.util.concurrent.DefaultPromise.access$000(DefaultPromise.java:34)	at io.netty.util.concurrent.DefaultPromise$1.run(DefaultPromise.java:438)	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:408)	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:402)	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)	at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)	at java.lang.Thread.run(Thread.java:745)