[10:19:21 WARN]: java.lang.ClassNotFoundException: net/minecraft/server/v1_7_R4/
PacketDataSerializer
[10:19:21 WARN]:        at java.lang.Class.forName0(Native Method)
[10:19:21 WARN]:        at java.lang.Class.forName(Unknown Source)
[10:19:21 WARN]:        at com.github.skystardust.keyboardmaster.KeyboardMaster.
getNMSClass(KeyboardMaster.java:48)
[10:19:21 WARN]:        at com.github.skystardust.keyboardmaster.listeners.Playe
rKeyMessageListener.onPacketReceiving(PlayerKeyMessageListener.java:32)
[10:19:21 WARN]:        at com.comphenix.protocol.injector.SortedPacketListenerL
ist.invokeReceivingListener(SortedPacketListenerList.java:114)
[10:19:21 WARN]:        at com.comphenix.protocol.injector.SortedPacketListenerL
ist.invokePacketRecieving(SortedPacketListenerList.java:67)
[10:19:21 WARN]:        at com.comphenix.protocol.injector.PacketFilterManager.h
andlePacket(PacketFilterManager.java:639)
[10:19:21 WARN]:        at com.comphenix.protocol.injector.PacketFilterManager.i
nvokePacketRecieving(PacketFilterManager.java:606)
[10:19:21 WARN]:        at com.comphenix.protocol.compat.netty.independent.Netty
ProtocolInjector.packetReceived(NettyProtocolInjector.java:332)
[10:19:21 WARN]:        at com.comphenix.protocol.compat.netty.independent.Netty
ProtocolInjector.onPacketReceiving(NettyProtocolInjector.java:297)
[10:19:21 WARN]:        at com.comphenix.protocol.compat.netty.independent.Netty
ChannelInjector.decode(NettyChannelInjector.java:546)
[10:19:21 WARN]:        at io.netty.handler.codec.ByteToMessageDecoder.callDecod
e(ByteToMessageDecoder.java:232)
[10:19:21 WARN]:        at io.netty.handler.codec.ByteToMessageDecoder.channelRe
ad(ByteToMessageDecoder.java:131)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.invokeC
hannelRead(DefaultChannelHandlerContext.java:337)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.fireCha
nnelRead(DefaultChannelHandlerContext.java:323)
[10:19:21 WARN]:        at com.comphenix.protocol.compat.netty.independent.Netty
ChannelInjector$4.channelRead(NettyChannelInjector.java:278)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.invokeC
hannelRead(DefaultChannelHandlerContext.java:337)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.fireCha
nnelRead(DefaultChannelHandlerContext.java:323)
[10:19:21 WARN]:        at io.netty.handler.codec.ByteToMessageDecoder.channelRe
ad(ByteToMessageDecoder.java:173)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.invokeC
hannelRead(DefaultChannelHandlerContext.java:337)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.fireCha
nnelRead(DefaultChannelHandlerContext.java:323)
[10:19:21 WARN]:        at io.netty.handler.timeout.ReadTimeoutHandler.channelRe
ad(ReadTimeoutHandler.java:149)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.invokeC
hannelRead(DefaultChannelHandlerContext.java:337)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelHandlerContext.fireCha
nnelRead(DefaultChannelHandlerContext.java:323)
[10:19:21 WARN]:        at io.netty.channel.DefaultChannelPipeline.fireChannelRe
ad(DefaultChannelPipeline.java:785)
[10:19:21 WARN]:        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUn
safe.read(AbstractNioByteChannel.java:100)
[10:19:21 WARN]:        at io.netty.channel.nio.NioEventLoop.processSelectedKey(
NioEventLoop.java:480)
[10:19:21 WARN]:        at io.netty.channel.nio.NioEventLoop.processSelectedKeys
Optimized(NioEventLoop.java:447)
[10:19:21 WARN]:        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.ja
va:341)
[10:19:21 WARN]:        at io.netty.util.concurrent.SingleThreadEventExecutor$2.
run(SingleThreadEventExecutor.java:101)
[10:19:21 WARN]:        at java.lang.Thread.run(Unknown Source)
[10:19:21 ERROR]: [KeyboardMaster] Unhandled exception occured in onPacketReceiv
ing(PacketEvent) for KeyboardMaster
java.lang.NullPointerException
[10:19:21 ERROR]: Parameters:
  net.minecraft.network.play.client.C17PacketCustomPayload@38047a59[
    field_149562_a=KM|KEYBOARD
    field_149560_b=2
    field_149561_c={49,56}
    timestamp=1581387561260
  ]

本帖最后由 雨韵 于 2020-2-11 10:43 编辑

服务器端和客户端有什么模组方便发一下么？建议检查是不是辅助mod放在了服务端，如果是，删除服务端的辅助mod尝试一下。还有就是看下KeyboardMaster插件是不是放在mods文件夹。

删除KeyboardMaster插件试试？

[img]file:///C:/Users/Administrator/Desktop/4%5D7EPSR9%5BQM2$BS[K5T23JO.pngfile:///C:/Users/Administrator/Desktop/LX4P%7B%5B%7DIB4IRW%7DUEZSC4LQL.png[/img]