Bug after switching game versions

[Fabrizio7410]

I switched my game from 1.17.1 to 1.19.2 and I've been getting randomly spammed with error messages ingame. Console says to include this information:

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 ProtocolLib.jar//com.comphenix.protocol.reflect.FuzzyReflection.getFieldByType(FuzzyReflection.java:397) at ProtocolLib.jar//com.comphenix.protocol.reflect.accessors.Accessors.getFieldAccessor(Accessors.java:57) at ProtocolLib.jar//com.comphenix.protocol.injector.netty.ChannelInjector.handleLogin(ChannelInjector.java:658) at ProtocolLib.jar//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.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 ProtocolLib.jar//com.comphenix.protocol.injector.netty.ChannelInjector$2.channelRead(ChannelInjector.java:292) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.flush.FlushConsolidationHandler.channelRead(FlushConsolidationHandler.java:152) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.channel.DefaultChannelPipeline$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$2.run(ThreadExecutorMap.java:74) at java.base/java.lang.Thread.run(Thread.java:833) Dump: Parameters: io.netty.buffer.PooledUnsafeDirectByteBuf@d1beb93[ memoryAddress=140581124866032 recyclerHandle=io.netty.util.Recycler$DefaultHandle@47be7cea chunk=Chunk(359127bf: 32%, 1302528/4194304) handle=2251829878456320 memory=java.nio.DirectByteBuffer[pos=0 lim=4194304 cap=4194304] offset=32768 length=12 maxLength=16 cache=io.netty.buffer.PoolThreadCache@19ff36ce tmpNioBuf= allocator=PooledByteBufAllocator(directByDefault: true) refCnt=2 readerIndex=12 writerIndex=12 markedReaderIndex=0 markedWriterIndex=0 maxCapacity=2147483647 ] manager: com.comphenix.protocol.injector.PacketFilterManager@1a6c2052[ unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@267c407f packetListeners=[] packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@46554b38 playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@3e57f3ad inputBufferedPackets=[] recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@45c23a85 sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@179f5fa hasClosed=false classLoader=PluginClassLoader{plugin=ProtocolLib v4.8.0, pluginEnabled=true, url=plugins/ProtocolLib.jar} reporter=com.comphenix.protocol.ProtocolLib$1@6d996266 server=CraftServer{serverName=Paper,serverVersion=git-Paper-215,minecraftVersion=1.19.2} library=ProtocolLib v4.8.0 asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@381037fe knowsServerPackets=true knowsClientPackets=true phaseLoginCount=0 phasePlayingCount=0 packetCreation=false nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@14eae191 pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@244bb9f4 hasRecycleDistance=true minecraftVersion=(MC: 1.19.2) debug=false ] Sender: com.comphenix.protocol.injector.netty.ChannelInjector@842b738[ decodeBuffer=protected void com.viaversion.viaversion.bukkit.handlers.BukkitDecodeHandler.decode(io.netty.channel.ChannelHandlerContext,io.netty.buffer.ByteBuf,java.util.List) throws java.lang.Exception encodeBuffer=protected void com.viaversion.viaversion.bukkit.handlers.BukkitEncodeHandler.encode(io.netty.channel.ChannelHandlerContext,java.lang.Object,io.netty.buffer.ByteBuf) throws java.lang.Exception factory=com.comphenix.protocol.injector.netty.InjectionFactory@27bc2a5a player=CraftPlayer{name=ilyBlossom} updated= playerName=ilyBlossom playerConnection= networkManager=net.minecraft.network.NetworkManager@3c76a3c9 originalChannel=[id: 0xe9222436, L:/240.4.98.216:25575 - R:/240.4.92.155:41148] channelField=VolatileField [accessor=DefaultFieldAccessor [field=public io.netty.channel.Channel net.minecraft.network.NetworkManager.m], container=net.minecraft.network.NetworkManager@3c76a3c9, previous=[id: 0xe9222436, L:/240.4.98.216:25575 - R:/240.4.92.155:41148], current=com.comphenix.protocol.injector.netty.ChannelInjector$3@6010cffc, previousLoaded=true, currentSet=true, forceAccess=true] packetMarker={} currentEvent= finalEvent= unfilteredProcessedPackets=com.comphenix.protocol.injector.netty.PacketFilterQueue@7df65fb1 vanillaDecoder=com.viaversion.viaversion.bukkit.handlers.BukkitDecodeHandler@7417c32d vanillaEncoder=com.viaversion.viaversion.bukkit.handlers.BukkitEncodeHandler@7a3fda25 finishQueue=[] channelListener=com.comphenix.protocol.injector.netty.ProtocolInjector@14eae191 processor=com.comphenix.protocol.injector.NetworkProcessor@53724a51 injected=true closed=false cumulation=PooledUnsafeDirectByteBuf(ridx: 12, widx: 12, cap: 12) cumulator=io.netty.handler.codec.ByteToMessageDecoder$1@7eb989cf singleDecode=false first=true firedChannelRead=true selfFiredChannelRead=true decodeState=1 discardAfterReads=16 numReads=0 added=true ] Version: ProtocolLib v4.8.0 Java Version: 17.0.1 Server: git-Paper-215 (MC: 1.19.2)