• This issue is not solved in a development build

Describe the bug
[20:42:54 INFO]: [ProtocolLib] Loading ProtocolLib v5.0.0-SNAPSHOT
[20:42:54 WARN]: [ProtocolLib] Detailed error reporting enabled!
[20:42:55 ERROR]: null initializing ProtocolLib v5.0.0-SNAPSHOT (Is it up to date?)
java.lang.ExceptionInInitializerError: null
at com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector.(NetworkManagerInjector.java:39) ~[?:?]
at com.comphenix.protocol.injector.PacketFilterManager.(PacketFilterManager.java:108) ~[?:?]
at com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:120) ~[?:?]
at com.comphenix.protocol.ProtocolLib.onLoad(ProtocolLib.java:175) ~[?:?]
at org.bukkit.craftbukkit.v1_19_R2.CraftServer.loadPlugins(CraftServer.java:433) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:219) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:973) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:301) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at java.lang.Thread.run(Thread.java:1623) ~[?:?]
Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection: Unable to make protected java.lang.Package java.lang.ClassLoader.getPackage(java.lang.String) accessible: module java.base does not "opens java.lang" to unnamed module @4829824a
at com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Initializable$Unavailable.defineClass(ClassInjector.java:472) ~[?:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.injectRaw(ClassInjector.java:284) ~[?:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$AbstractBase.inject(ClassInjector.java:118) ~[?:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:241) ~[?:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default.load(ClassLoadingStrategy.java:148) ~[?:?]
at com.comphenix.net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:101) ~[?:?]
at com.comphenix.net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:6166) ~[?:?]
at com.comphenix.protocol.injector.temporary.TemporaryPlayerFactory.setupProxyPlayerConstructor(TemporaryPlayerFactory.java:159) ~[?:?]
at com.comphenix.protocol.injector.temporary.TemporaryPlayerFactory.(TemporaryPlayerFactory.java:47) ~[?:?]
... 9 more

To Reproduce
Steps to reproduce the behavior:
Just launch the server

Expected behavior
A clear and concise description of what you expected to happen.

Version Info
[20:50:28 WARN]: Unexpected exception while parsing console command "protocol dump"
org.bukkit.command.CommandException: Cannot execute command 'protocol' in plugin ProtocolLib v5.0.0-SNAPSHOT - plugin is disabled.
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:37) ~[spigot-api-1.19.3-R0.1-SNAPSHOT.jar:?]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot-api-1.19.3-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_19_R2.CraftServer.dispatchCommand(CraftServer.java:847) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at org.bukkit.craftbukkit.v1_19_R2.CraftServer.dispatchServerCommand(CraftServer.java:832) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.dedicated.DedicatedServer.bg(DedicatedServer.java:413) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:389) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1201) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1017) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:301) ~[spigot-1.19.3-R0.1-SNAPSHOT.jar:3670-Spigot-454acb7-bd29f41]
at java.lang.Thread.run(Thread.java:1623) ~[?:?]

Change your system language to english

for Java 20 support you will need to use the most recent dev build