• This issue is not solved in a development build

Describe the bug
When I start my server on Java jdk22-ea9, paper 1.20.1-117, plugin not work

To Reproduce
Steps to reproduce the behavior:

1. Install Java 22
2. Start server
3. See log error

Expected behavior
Java 22 compatibility

Error
[03:57:07] [Server thread/ERROR]: [ProtocolLib] Error initializing plugin 'ProtocolLib.jar' in folder 'plugins' (Is it up to date?)
java.lang.ExceptionInInitializerError: null
at com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector.(NetworkManagerInjector.java:40) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.PacketFilterManager.(PacketFilterManager.java:111) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:121) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.ProtocolLib.onLoad(ProtocolLib.java:183) ~[ProtocolLib.jar:?]
at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:59) ~[paper-1.20.1.jar:git-Paper-117]
at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:18) ~[paper-1.20.1.jar:git-Paper-117]
at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:40) ~[paper-1.20.1.jar:git-Paper-117]
at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:36) ~[paper-1.20.1.jar:git-Paper-117]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.loadPlugins(CraftServer.java:508) ~[paper-1.20.1.jar:git-Paper-117]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:273) ~[paper-1.20.1.jar:git-Paper-117]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1101) ~[paper-1.20.1.jar:git-Paper-117]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:318) ~[paper-1.20.1.jar:git-Paper-117]
at java.lang.Thread.run(Thread.java:1570) ~[?:?]
Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection: Unable to make protected java.lang.Package java.lang.ClassLoader.getPackage(java.lang.String) accessible: module java.base does not "opens java.lang" to unnamed module @61b86e5c
at com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Initializable$Unavailable.defineClass(ClassInjector.java:472) ~[ProtocolLib.jar:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.injectRaw(ClassInjector.java:284) ~[ProtocolLib.jar:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassInjector$AbstractBase.inject(ClassInjector.java:118) ~[ProtocolLib.jar:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:241) ~[ProtocolLib.jar:?]
at com.comphenix.net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default.load(ClassLoadingStrategy.java:148) ~[ProtocolLib.jar:?]
at com.comphenix.net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:101) ~[ProtocolLib.jar:?]
at com.comphenix.net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:6317) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.temporary.TemporaryPlayerFactory.setupProxyPlayerConstructor(TemporaryPlayerFactory.java:159) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.temporary.TemporaryPlayerFactory.(TemporaryPlayerFactory.java:47) ~[ProtocolLib.jar:?]
... 13 more

Version Info
5.1.0-661

1. update to 5.1.0 release

I am running into the same issue however this is for my modpack running 1.12.2