[00:04:20] [Netty Epoll Server IO #0/ERROR]: [ProtocolLib] INTERNAL ERROR: Unable to intercept a read client packet. If this problem hasn't already been reported, please open a ticket at https://github.com/dmulloy2/ProtocolLib/issues with the following data: Stack Trace: java.lang.IllegalArgumentException: Unable to find a field null with the type com.mojang.authlib.GameProfile in net.minecraft.network.protocol.login.PacketLoginInStart at com.comphenix.protocol.reflect.FuzzyReflection.getFieldByType(FuzzyReflection.java:397) at com.comphenix.protocol.reflect.accessors.Accessors.getFieldAccessor(Accessors.java:57) at com.comphenix.protocol.injector.netty.ChannelInjector.handleLogin(ChannelInjector.java:658) at com.comphenix.protocol.injector.netty.ChannelInjector.decode(ChannelInjector.java:591) at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:510) at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:449) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:279) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at com.comphenix.protocol.injector.netty.ChannelInjector$2.channelRead(ChannelInjector.java:292) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:800) at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:487) at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:385) at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:833) Dump: Parameters: io.netty.buffer.PooledUnsafeDirectByteBuf@701598a4[ memoryAddress=139669945970704 recyclerHandle=io.netty.util.Recycler$DefaultHandle@1299cb46 chunk=Chunk(1f16adde: 13%, 516096/4194304) handle=18014428574253056 memory=java.nio.DirectByteBuffer[pos=0 lim=4194304 cap=4194304] offset=262144 length=26 maxLength=32 cache=io.netty.buffer.PoolThreadCache@1e929e36 tmpNioBuf=<null> allocator=PooledByteBufAllocator(directByDefault: true) refCnt=2 readerIndex=26 writerIndex=26 markedReaderIndex=0 markedWriterIndex=0 maxCapacity=2147483647 ] manager: com.comphenix.protocol.injector.PacketFilterManager@5ed20eac[ unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@79d1c678 packetListeners=[] packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@6dd1c909 playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@4b79d4ea inputBufferedPackets=[] recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@415c0e81 sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@6b8e2329 hasClosed=false classLoader=org.bukkit.plugin.java.PluginClassLoader@6f5fd00 reporter=com.comphenix.protocol.ProtocolLib$1@61e77340 server=CraftServer{serverName=CraftBukkit,serverVersion=3566-Spigot-584b459-c379a6b,minecraftVersion=1.19.2} library=ProtocolLib v4.8.0 asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@45351702 knowsServerPackets=true knowsClientPackets=true phaseLoginCount=0 phasePlayingCount=0 packetCreation=false nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@6deedd32 pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@75d1b4aa hasRecycleDistance=true minecraftVersion=(MC: 1.19.2) debug=false ] Sender: com.comphenix.protocol.injector.netty.ChannelInjector@38e56166[ decodeBuffer=protected void net.minecraft.network.PacketDecoder.decode(io.netty.channel.ChannelHandlerContext,io.netty.buffer.ByteBuf,java.util.List) throws java.lang.Exception encodeBuffer=protected void net.minecraft.network.PacketEncoder.encode(io.netty.channel.ChannelHandlerContext,java.lang.Object,io.netty.buffer.ByteBuf) throws java.lang.Exception factory=com.comphenix.protocol.injector.netty.InjectionFactory@1b27f69a player=CraftPlayer{name=GoriliaFuzzy} updated=<null> playerName=GoriliaFuzzy playerConnection=<null> networkManager=net.minecraft.network.NetworkManager@1e837eec originalChannel=[id: 0x554a2a5b, L:/240.4.103.200:25575 - R:/240.4.6.185:55266] channelField=VolatileField [accessor=DefaultFieldAccessor [field=public io.netty.channel.Channel net.minecraft.network.NetworkManager.m], container=net.minecraft.network.NetworkManager@1e837eec, previous=[id: 0x554a2a5b, L:/240.4.103.200:25575 - R:/240.4.6.185:55266], current=com.comphenix.protocol.injector.netty.ChannelInjector$3@4b4199f0, previousLoaded=true, currentSet=true, forceAccess=true] packetMarker={} currentEvent=<null> finalEvent=<null> unfilteredProcessedPackets=com.comphenix.protocol.injector.netty.PacketFilterQueue@5a934d3a vanillaDecoder=net.minecraft.network.PacketDecoder@5fe23c9a vanillaEncoder=net.minecraft.network.PacketEncoder@6609588b finishQueue=[] channelListener=com.comphenix.protocol.injector.netty.ProtocolInjector@6deedd32 processor=com.comphenix.protocol.injector.NetworkProcessor@61fab02c injected=true closed=false cumulation=PooledUnsafeDirectByteBuf(ridx: 26, widx: 26, cap: 26) cumulator=io.netty.handler.codec.ByteToMessageDecoder$1@35900929 singleDecode=false first=true firedChannelRead=false selfFiredChannelRead=true decodeState=1 discardAfterReads=16 numReads=0 added=true ] Version: ProtocolLib v4.8.0 Java Version: 17.0.1 Server: 3566-Spigot-584b459-c379a6b (MC: 1.19.2)

Are you kidding?
Could you please read the last few error reports (or the project's page on spigot) ?
Which version is for MC 1.19.x??? Please take look ...!

This is fixed in the latest dev builds. Find them here: https://ci.dmulloy2.net/job/ProtocolLib/