I have this problem idk what it is but it said it hasn't been reported yes soo:

[23:45:43 ERROR]: [ProtocolLib] INTERNAL ERROR: Cannot load ProtocolLib.
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.ExceptionInInitializerError
at ProtocolLib.jar//com.comphenix.protocol.injector.netty.ProtocolInjector.(ProtocolInjector.java:69)
at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterManager.(PacketFilterManager.java:202)
at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterBuilder.buildInternal(PacketFilterBuilder.java:185)
at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:177)
at ProtocolLib.jar//com.comphenix.protocol.ProtocolLib.onLoad(ProtocolLib.java:203)
at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:59)
at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:18)
at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:36)
at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:36)
at org.bukkit.craftbukkit.v1_19_R3.CraftServer.loadPlugins(CraftServer.java:423)
at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:273)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1103)
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319)
at java.base/java.lang.Thread.run(Thread.java:1589)
Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection: Unable to make protected java.lang.Package java.lang.ClassLoader.getPackage(java.lang.String) accessible: module java.base does not "opens java.lang" to unnamed module @5e0c2ed4
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Initializable$Unavailable.defineClass(ClassInjector.java:471)
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.injectRaw(ClassInjector.java:283)
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$AbstractBase.inject(ClassInjector.java:117)
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:243)
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default.load(ClassLoadingStrategy.java:150)
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:101)
at ProtocolLib.jar//com.comphenix.net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:6161)
at ProtocolLib.jar//com.comphenix.protocol.injector.server.TemporaryPlayerFactory.setupProxyPlayerConstructor(TemporaryPlayerFactory.java:187)
at ProtocolLib.jar//com.comphenix.protocol.injector.server.TemporaryPlayerFactory.(TemporaryPlayerFactory.java:51)
... 14 more
Dump:
Parameters:
[NULL]
Sender:
com.comphenix.protocol.ProtocolLib@5665a44e[
statistics=
backgroundCompiler=
packetTask=-1
tickCounter=0
unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@448800d9
configExpectedMod=-1
updater=com.comphenix.protocol.updater.SpigotUpdater@3f348bd2
redirectHandler=
commandProtocol=
commandPacket=
commandFilter=
packetLogging=
skipDisable=false
isEnabled=false
loader=io.papermc.paper.plugin.manager.DummyBukkitPluginLoader@4bf868ee
server=CraftServer{serverName=Paper,serverVersion=git-Paper-471,minecraftVersion=1.19.4}
file=plugins\ProtocolLib.jar
description=org.bukkit.plugin.PluginDescriptionFile@5bf06b46
pluginMeta=org.bukkit.plugin.PluginDescriptionFile@5bf06b46
dataFolder=plugins\ProtocolLib
classLoader=PluginClassLoader{plugin=ProtocolLib v4.8.0, pluginEnabled=false, url=plugins\ProtocolLib.jar}
naggable=true
newConfig=YamlConfiguration[path='', root='YamlConfiguration']
configFile=plugins\ProtocolLib\config.yml
logger=com.destroystokyo.paper.utils.PaperPluginLogger@7cd9a8d8
]
Version:
ProtocolLib v4.8.0
Java Version:
19.0.2
Server:
git-Paper-471 (MC: 1.19.4)

plugin is not working at all if that helps
mb is the problem 1.19.4?

Tnx for support
Jon

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