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 Spikhalskiy
, 1 year ago
complete already: DefaultPromise@4a75ea21(failure: java.lang.StackOverflowError)
via GitHub by md-5
, 2 years ago
complete already
via GitHub by Asphodan
, 2 years ago
via GitHub by trustin
, 2 years ago
complete already: DefaultChannelPromise@3f0cf5cb(failure(java.util.concurrent.CancellationException)
via Stack Overflow by jwa
, 2 years ago
complete already: DefaultChannelPromise@2a5ca609(failure(java.lang.NullPointerException)
java.lang.IllegalStateException: complete already: DefaultPromise@4a75ea21(failure: java.lang.StackOverflowError)	at io.netty.util.concurrent.DefaultPromise.setFailure(DefaultPromise.java:123)	at io.netty.channel.pool.SimpleChannelPool.acquireHealthyFromPoolOrNew(SimpleChannelPool.java:152)	at io.netty.channel.pool.SimpleChannelPool.notifyHealthCheck(SimpleChannelPool.java:195)	at io.netty.channel.pool.SimpleChannelPool.doHealthCheck(SimpleChannelPool.java:170)	at io.netty.channel.pool.SimpleChannelPool.acquireHealthyFromPoolOrNew(SimpleChannelPool.java:142)	at io.netty.channel.pool.SimpleChannelPool.acquire(SimpleChannelPool.java:112)	at io.netty.channel.pool.FixedChannelPool.acquire0(FixedChannelPool.java:230)	at io.netty.channel.pool.FixedChannelPool.access$300(FixedChannelPool.java:37)	at io.netty.channel.pool.FixedChannelPool$3.run(FixedChannelPool.java:204)	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$2.run(SingleThreadEventExecutor.java:136)	at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:145)	at java.lang.Thread.run(Thread.java:745)