java.lang.IllegalStateException: void future

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java.lang.IllegalStateException: void future
at io.netty.channel.VoidChannelPromise.fail(VoidChannelPromise.java:178)
at io.netty.channel.VoidChannelPromise.addListener(VoidChannelPromise.java:44)
at io.netty.channel.VoidChannelPromise.addListener(VoidChannelPromise.java:24)
at net.md_5.bungee.netty.ChannelWrapper.write(ChannelWrapper.java:54)
at net.md_5.bungee.UserConnection$1.sendPacket(UserConnection.java:155)
at net.md_5.bungee.UserConnection.setCompressionThreshold(UserConnection.java:629)
at net.md_5.bungee.connection.InitialHandler$6$1.run(InitialHandler.java:506)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:312)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)
at java.lang.Thread.run(Thread.java:745)

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