After updating my server to 1.19 (Test copy), I get the error below when clients connect to the server:

To Reproduce
Simply refresh against the server in a server list in the 1.19 client

ERROR
[11:08:52] [Netty Server IO #1/INFO]: Error Unable to intercept a read client packet. (java.lang.IllegalArgumentException: Unable to find a field null with the type com.mojang.authlib.GameProfile in net.minecraft.network.protocol.login.PacketLoginInStart) occured in com.comphenix.protocol.injector.netty.ChannelInjector@49b325.�[m
[11:08:52] [Netty Server IO #1/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 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.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:722)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:658)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:584)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at java.base/java.lang.Thread.run(Thread.java:833)
Dump:
Parameters:
io.netty.buffer.PooledUnsafeDirectByteBuf@4955e3f6[
memoryAddress=1391716249664
recyclerHandle=io.netty.util.Recycler$DefaultHandle@6f638f8a
chunk=Chunk(2f46c6df: 2%, 57344/4194304)
handle=562980018192384
memory=java.nio.DirectByteBuffer[pos=0 lim=4194304 cap=4194304]
offset=8192
length=9
maxLength=16
cache=io.netty.buffer.PoolThreadCache@d7fa593
tmpNioBuf=
allocator=PooledByteBufAllocator(directByDefault: true)
refCnt=2
readerIndex=9
writerIndex=9
markedReaderIndex=0
markedWriterIndex=0
maxCapacity=2147483647
]
manager:
com.comphenix.protocol.injector.PacketFilterManager@423a58e6[
unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@5bd30e40
packetListeners=[PacketAdapter[plugin=SpleefX, sending=ListeningWhitelist[priority=NORMAL, packets=[CAMERA[class=PacketPlayOutCamera, id=71]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST]]
packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@2bf06b94
playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@178685e0
inputBufferedPackets=[]
recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@76b029e
sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@4409bd3d
hasClosed=false
classLoader=org.bukkit.plugin.java.PluginClassLoader@261155c
reporter=com.comphenix.protocol.ProtocolLib$1@6c0dd2e3
server=CraftServer{serverName=CraftBukkit,serverVersion=3499-Spigot-87c4d13-64c1527,minecraftVersion=1.19}
library=ProtocolLib v4.8.0
asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@10a7678b
knowsServerPackets=true
knowsClientPackets=true
phaseLoginCount=0
phasePlayingCount=1
packetCreation=false
nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@4009ed92
pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@2fafc41c
hasRecycleDistance=true
minecraftVersion=(MC: 1.19.0)
debug=false
]
Sender:
com.comphenix.protocol.injector.netty.ChannelInjector@49b325[
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@2e19e8f0
player=com.comphenix.protocol.injector.server.TemporaryPlayerInvocationHandler@7fc7560b
updated=
playerName=
playerConnection=
networkManager=net.minecraft.network.NetworkManager@32da024d
originalChannel=[id: 0x42758a55, L:/127.0.0.1:25565 - R:/127.0.0.1:56179]
channelField=VolatileField [accessor=DefaultFieldAccessor [field=public io.netty.channel.Channel net.minecraft.network.NetworkManager.m], container=net.minecraft.network.NetworkManager@32da024d, previous=[id: 0x42758a55, L:/127.0.0.1:25565 - R:/127.0.0.1:56179], current=com.comphenix.protocol.injector.netty.ChannelInjector$3@73c8c52a, previousLoaded=true, currentSet=true, forceAccess=true]
packetMarker={}
currentEvent=
finalEvent=
unfilteredProcessedPackets=com.comphenix.protocol.injector.netty.PacketFilterQueue@65aab354
vanillaDecoder=com.viaversion.viaversion.bukkit.handlers.BukkitDecodeHandler@50fedb5e
vanillaEncoder=com.viaversion.viaversion.bukkit.handlers.BukkitEncodeHandler@761b9363
finishQueue=[]
channelListener=com.comphenix.protocol.injector.netty.ProtocolInjector@4009ed92
processor=com.comphenix.protocol.injector.NetworkProcessor@2b6821fa
injected=true
closed=false
cumulation=PooledUnsafeDirectByteBuf(ridx: 9, widx: 9, cap: 9)
cumulator=io.netty.handler.codec.ByteToMessageDecoder$1@dea2be2
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:
3499-Spigot-87c4d13-64c1527 (MC: 1.19)

Version Info
I am using the 4.8.0 version of ProtocolLib

Additional context
I have stripped any plugins that were erroring that haven't had updates yet and the problem persists.

Please use the latest development build from https://ci.dmulloy2.net/job/ProtocolLib/lastSuccessfulBuild/ to get 1.19 support

Thanks! Working better now.