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DefaultChannelPromise@e79d29(uncancellable)
io.netty.util.concurrent.BlockingOperationException: DefaultChannelPromise@4220e83d(uncancellable) at io.netty.util.concurrent.DefaultPromise.checkDeadLock(DefaultPromise.java:390)[DefaultPromise.class:?] at io.netty.channel.DefaultChannelPromise.checkDeadLock(DefaultChannelPromise.java:157)[DefaultChannelPromise.class:?] at io.netty.util.concurrent.DefaultPromise.awaitUninterruptibly(DefaultPromise.java:283)[DefaultPromise.class:?] at io.netty.channel.DefaultChannelPromise.awaitUninterruptibly(DefaultChannelPromise.java:135)[DefaultChannelPromise.class:?] at io.netty.channel.DefaultChannelPromise.awaitUninterruptibly(DefaultChannelPromise.java:28)[DefaultChannelPromise.class:?] at net.minecraft.network.NetworkManager.func_150718_a(NetworkManager.java:304)[ek.class:?] at net.minecraft.network.NetHandlerPlayServer$1.operationComplete(NetHandlerPlayServer.java:172)[lm$1.class:?] at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)[DefaultPromise.class:?] at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)[DefaultPromise.class:?] at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)[DefaultPromise.class:?] at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:406)[DefaultPromise.class:?] at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)[DefaultChannelPromise.class:?] at io.netty.channel.ChannelOutboundBuffer.safeSuccess(ChannelOutboundBuffer.java:523)[ChannelOutboundBuffer.class:?] at io.netty.channel.ChannelOutboundBuffer.remove(ChannelOutboundBuffer.java:247)[ChannelOutboundBuffer.class:?] at io.netty.channel.ChannelOutboundBuffer.removeBytes(ChannelOutboundBuffer.java:322)[ChannelOutboundBuffer.class:?] at io.netty.channel.epoll.EpollSocketChannel.writeBytesMultiple(EpollSocketChannel.java:212)[EpollSocketChannel.class:?] at io.netty.channel.epoll.EpollSocketChannel.doWriteMultiple(EpollSocketChannel.java:364)[EpollSocketChannel.class:?] at io.netty.channel.epoll.EpollSocketChannel.doWrite(EpollSocketChannel.java:317)[EpollSocketChannel.class:?] at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:707)[AbstractChannel$AbstractUnsafe.class:?] at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:248)[AbstractEpollChannel$AbstractEpollUnsafe.class:?] at io.netty.channel.epoll.EpollSocketChannel$EpollSocketUnsafe.epollOutReady(EpollSocketChannel.java:623)[EpollSocketChannel$EpollSocketUnsafe.class:?] at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:322)[EpollEventLoop.class:?] at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:264)[EpollEventLoop.class:?] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)[SingleThreadEventExecutor$2.class:?] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_91]