Netty error

[dylanparry]

Hi,

I've been getting a lot of Netty-related errors appearing in my server logs, and I wondered if it was anything to do with this mod? Here's an example of one of the errors (they all pretty much look the same):

[11:13:52] [Netty Epoll Server IO #5/ERROR]: Error sending packet clientbound/minecraft:disconnect
io.netty.handler.codec.EncoderException: Sending unknown packet 'clientbound/minecraft:disconnect'
        at knot/net.minecraft.class_9136.method_56426(class_9136.java:47) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_9136.encode(class_9136.java:14) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_2545.method_10838(class_2545.java:26) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_2545.encode(class_2545.java:12) ~[server-intermediary.jar:?]
        at knot/io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:893) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:875) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:868) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.ChannelOutboundHandlerAdapter.write(ChannelOutboundHandlerAdapter.java:113) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/net.minecraft.class_2535$2.write(class_2535.java:530) ~[server-intermediary.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:893) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:956) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:982) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:950) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:1000) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:974) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:305) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/net.minecraft.class_2535.method_36942(class_2535.java:350) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_2535.method_10764(class_2535.java:343) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_2535.method_52906(class_2535.java:325) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_2535.method_10752(class_2535.java:319) ~[server-intermediary.jar:?]
        at knot/net.minecraft.class_2535.exceptionCaught(class_2535.java:170) ~[server-intermediary.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:325) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:317) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:143) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:447) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.handler.flow.FlowControlHandler.dequeue(FlowControlHandler.java:202) ~[netty-handler-4.1.115.Final.jar:?]
        at knot/io.netty.handler.flow.FlowControlHandler.channelRead(FlowControlHandler.java:164) ~[netty-handler-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) ~[netty-codec-4.1.115.Final.jar:?]
        at knot/io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:333) ~[netty-codec-4.1.115.Final.jar:?]
        at knot/io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:455) ~[netty-codec-4.1.115.Final.jar:?]
        at knot/io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) ~[netty-codec-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:289) ~[netty-handler-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868) ~[netty-transport-4.1.115.Final.jar:?]
        at knot/io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799) ~[netty-transport-classes-epoll-4.1.115.Final.jar:?]
        at knot/io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:501) ~[netty-transport-classes-epoll-4.1.115.Final.jar:?]
        at knot/io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:399) ~[netty-transport-classes-epoll-4.1.115.Final.jar:?]
        at knot/io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.115.Final.jar:?]
        at knot/io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.115.Final.jar:?]
        at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]

It doesn't seem to be causing any problems in terms of gameplay or ability to connect to the server, but it's occurring often and regularly and filling the logs up with error messages.

I've attached a full log latest.log showing everything. There are a couple of errors early on in the log that are unrelated to this issue, so you can most likely ignore them.

Thanks :)