[05:21:14 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 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:529)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at ProtocolLib.jar//com.comphenix.protocol.injector.netty.ChannelInjector$2.channelRead(ChannelInjector.java:292)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.flush.FlushConsolidationHandler.channelRead(FlushConsolidationHandler.java:152)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
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:499)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at java.base/java.lang.Thread.run(Thread.java:833)
Dump:
Parameters:
io.netty.buffer.PooledUnsafeDirectByteBuf@69622603[
memoryAddress=140030975303088
recyclerHandle=io.netty.util.Recycler$DefaultHandle@7dd2991
chunk=Chunk(1577bf09: 24%, 974848/4194304)
handle=12947878993461249
memory=java.nio.DirectByteBuffer[pos=0 lim=4194304 cap=4194304]
offset=188432
length=2
maxLength=16
cache=io.netty.buffer.PoolThreadCache@3370691d
tmpNioBuf=
allocator=PooledByteBufAllocator(directByDefault: true)
refCnt=2
readerIndex=2
writerIndex=2
markedReaderIndex=0
markedWriterIndex=0
maxCapacity=2147483647
]
manager:
com.comphenix.protocol.injector.PacketFilterManager@16c37721[
unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@5e4c95de
packetListeners=[PacketAdapter[plugin=KenshinsHideAndSeek, sending=ListeningWhitelist[priority=NORMAL, packets=[ENTITY_STATUS[class=PacketPlayOutEntityStatus, id=27], REMOVE_ENTITY_EFFECT[class=PacketPlayOutRemoveEntityEffect, id=59], ENTITY_HEAD_ROTATION[class=PacketPlayOutEntityHeadRotation, id=62], SPAWN_ENTITY[class=PacketPlayOutSpawnEntity, id=0], SPAWN_ENTITY_LIVING[PLAY, SERVER, 2, classNames: [net.minecraft.network.protocol.game.PacketPlayOutSpawnEntityLiving, net.minecraft.network.protocol.game.ClientboundSpawnEntityLivingPacket, net.minecraft.network.play.server.SPacketSpawnMob] (unregistered)], ENTITY_TELEPORT[class=PacketPlayOutEntityTeleport, id=98], COLLECT[class=PacketPlayOutCollect, id=97], SPAWN_ENTITY_EXPERIENCE_ORB[class=PacketPlayOutSpawnEntityExperienceOrb, id=1], NAMED_ENTITY_SPAWN[class=PacketPlayOutNamedEntitySpawn, id=4], SPAWN_ENTITY_PAINTING[PLAY, SERVER, 3, classNames: [net.minecraft.network.protocol.game.PacketPlayOutSpawnEntityPainting, net.minecraft.network.protocol.game.ClientboundSpawnEntityPaintingPacket, net.minecraft.network.play.server.SPacketSpawnPainting] (unregistered)], ANIMATION[class=PacketPlayOutAnimation, id=6], ENTITY_EFFECT[class=PacketPlayOutEntityEffect, id=101], REL_ENTITY_MOVE[class=PacketPlayOutRelEntityMove, id=41], BLOCK_BREAK_ANIMATION[class=PacketPlayOutBlockBreakAnimation, id=9], ENTITY_LOOK[class=PacketPlayOutEntityLook, id=43], ATTACH_ENTITY[class=PacketPlayOutAttachEntity, id=78], ENTITY_METADATA[class=PacketPlayOutEntityMetadata, id=77], ENTITY_EQUIPMENT[class=PacketPlayOutEntityEquipment, id=80], ENTITY_VELOCITY[class=PacketPlayOutEntityVelocity, id=79]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=KenshinsHideAndSeek, sending=EMPTY_WHITELIST, receiving=ListeningWhitelist[priority=NORMAL, packets=[USE_ENTITY[class=PacketPlayInUseEntity, id=13]], gamephase=PLAYING, options=[]]], PacketAdapter[plugin=WorldGuardExtraFlags, sending=ListeningWhitelist[priority=NORMAL, packets=[REMOVE_ENTITY_EFFECT[class=PacketPlayOutRemoveEntityEffect, id=59]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST]]
packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@56283490
playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@bdca6fd
inputBufferedPackets=[]
recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@62bb2d8
sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@3cf335a6
hasClosed=false
classLoader=PluginClassLoader{plugin=ProtocolLib v4.8.0, pluginEnabled=true, url=plugins/ProtocolLib.jar}
reporter=com.comphenix.protocol.ProtocolLib$1@2be80a1c
server=CraftServer{serverName=Purpur,serverVersion=git-Purpur-1927,minecraftVersion=1.19.3}
library=ProtocolLib v4.8.0
asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@1e8b6dd5
knowsServerPackets=true
knowsClientPackets=true
phaseLoginCount=0
phasePlayingCount=4
packetCreation=true
nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@3d10d4d5
pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@7f783cd
hasRecycleDistance=true
minecraftVersion=(MC: 1.18.2)
debug=false
]
Sender:
com.comphenix.protocol.injector.netty.ChannelInjector@4f79c060[
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@335072c9
player=CraftPlayer{name=Demonlord000}
updated=
playerName=Demonlord000
playerConnection=
networkManager=net.minecraft.network.NetworkManager@399e3912
originalChannel=[id: 0xd7c6c815, L:/172.18.0.2:25569 - R:/207.216.212.9:60984]
channelField=VolatileField [accessor=DefaultFieldAccessor [field=public io.netty.channel.Channel net.minecraft.network.NetworkManager.m], container=net.minecraft.network.NetworkManager@399e3912, previous=[id: 0xd7c6c815, L:/172.18.0.2:25569 - R:/207.216.212.9:60984], current=com.comphenix.protocol.injector.netty.ChannelInjector$3@21b1fd64, previousLoaded=true, currentSet=true, forceAccess=true]
packetMarker={}
currentEvent=
finalEvent=
unfilteredProcessedPackets=com.comphenix.protocol.injector.netty.PacketFilterQueue@20ca53f2
vanillaDecoder=net.minecraft.network.PacketDecoder@6854b850
vanillaEncoder=net.minecraft.network.PacketEncoder@3380043b
finishQueue=[]
channelListener=com.comphenix.protocol.injector.netty.ProtocolInjector@3d10d4d5
processor=com.comphenix.protocol.injector.NetworkProcessor@6f53107d
injected=true
closed=false
cumulation=PooledUnsafeDirectByteBuf(ridx: 2, widx: 2, cap: 2)
cumulator=io.netty.handler.codec.ByteToMessageDecoder$1@2414d5b0
singleDecode=false
first=true
firedChannelRead=false
selfFiredChannelRead=true
decodeState=1
discardAfterReads=16
numReads=0
added=true
]
Version:
ProtocolLib v4.8.0
Java Version:
17.0.6
Server:
git-Purpur-1927 (MC: 1.19.3)

You need to update to the latest dev build :
https://ci.dmulloy2.net/job/ProtocolLib/