[1.12] critical exception handling a packet | players getting kicked from server

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Issue #117 new
Autissima created an issue

I don’t know how to add steps to reproduce, because it strikes randomly, the server console giving out an exception:

[Netty Server IO #13/ERROR] [FML]: There was a critical exception handling a packet on channel effortlessbuilding
java.lang.NullPointerException: null

It affects nearly all players playing on the server, randomly kicking them, even without using effortlessbuilding at the time, is this some known incompatibility?

I’m grateful for any response

Comments (2)

  1. Autissima reporter

    In addition the server log gets spammed with this whenever someone gets kicked like that. It’s enough to clear the visible history in the terminal.

    [12:29:29] [Netty Server IO #20/ERROR] [FML]: NetworkDispatcher exception
    java.io.IOException: An established connection was aborted by the software in your host machine
            at sun.nio.ch.SocketDispatcher.writev0(Native Method) ~[?:1.8.0_291]
            at sun.nio.ch.SocketDispatcher.writev(Unknown Source) ~[?:1.8.0_291]
            at sun.nio.ch.IOUtil.write(Unknown Source) ~[?:1.8.0_291]
            at sun.nio.ch.SocketChannelImpl.write(Unknown Source) ~[?:1.8.0_291]
            at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:432) ~[minecraft_server.1.12.2.jar:?]
            at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:856) [minecraft_server.1.12.2.jar:?]
            at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.forceFlush(AbstractNioChannel.java:368) [minecraft_server.1.12.2.jar:?]
            at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:618) [minecraft_server.1.12.2.jar:?]
            at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:559) [minecraft_server.1.12.2.jar:?]
            at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:476) [minecraft_server.1.12.2.jar:?]
            at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) [minecraft_server.1.12.2.jar:?]
            at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [minecraft_server.1.12.2.jar:?]
            at java.lang.Thread.run(Unknown Source) [?:1.8.0_291]

  2. Requios repo owner

    Hmm this is difficult to fix without knowing what packet channel is causing the error. I see Unknown source in the log. Do the players locally also get an error log that maybe has more information?

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