[20:40:09 INFO]: [ProtocolLib] Loading server plugin ProtocolLib v5.3.0
[20:40:09 WARN]: [ProtocolLib] Version (MC: 1.21.8) has not yet been tested! Proceed with caution.
[20:40:09 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.RuntimeException: Unable to find network.ProtocolInfo$a (network.ProtocolInfo$Unbound)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.utility.MinecraftReflection.lambda$getMinecraftClass$5(MinecraftReflection.java:1581)
        at java.base/java.util.Optional.orElseThrow(Optional.java:403)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.utility.MinecraftReflection.getMinecraftClass(MinecraftReflection.java:1581)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.utility.MinecraftReflection.getProtocolInfoUnboundClass(MinecraftReflection.java:1878)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.injector.packet.PacketRegistry.createRegisterV1_20_5(PacketRegistry.java:367)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.injector.packet.PacketRegistry.initialize(PacketRegistry.java:552)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.injector.packet.PacketRegistry.getClientPacketTypes(PacketRegistry.java:604)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.injector.PacketFilterManager.<init>(PacketFilterManager.java:112)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:121)
        at ProtocolLib_5.3.0.jar//com.comphenix.protocol.ProtocolLib.onLoad(ProtocolLib.java:179)
        at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:59)
        at io.papermc.paper.plugin.storage.ServerPluginProviderStorage.processProvided(ServerPluginProviderStorage.java:18)
        at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:39)
        at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:39)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:581)
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:269)
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1179)
        at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:313)
        at java.base/java.lang.Thread.run(Thread.java:1583)
  Dump:
  Parameters:
    [NULL]
  Sender:
    com.comphenix.protocol.ProtocolLib@5fa25ea4[
      statistics=<null>
      packetTask=<null>
      tickCounter=0
      configExpectedMod=-1
      updater=com.comphenix.protocol.updater.SpigotUpdater@82e28e8
      redirectHandler=<null>
      scheduler=com.comphenix.protocol.scheduler.DefaultScheduler@46a5ad97
      commandProtocol=<null>
      commandPacket=<null>
      commandFilter=<null>
      packetLogging=<null>
      skipDisable=false
      isEnabled=false
      loader=io.papermc.paper.plugin.manager.DummyBukkitPluginLoader@c3b9bfa
      server=CraftServer{serverName=Purpur,serverVersion=1.21.8-2493-07108b7,minecraftVersion=1.21.8}
      file=plugins/ProtocolLib_5.3.0.jar
      description=org.bukkit.plugin.PluginDescriptionFile@6d7300a2
      pluginMeta=org.bukkit.plugin.PluginDescriptionFile@6d7300a2
      dataFolder=plugins/ProtocolLib
      classLoader=PluginClassLoader{plugin=ProtocolLib v5.3.0, pluginEnabled=false, url=plugins/ProtocolLib_5.3.0.jar}
      naggable=true
      newConfig=YamlConfiguration[path='', root='YamlConfiguration']
      configFile=plugins/ProtocolLib/config.yml
      logger=com.destroystokyo.paper.utils.PaperPluginLogger@4f4bdfb7
      lifecycleEventManager=io.papermc.paper.plugin.lifecycle.event.PaperLifecycleEventManager@9cf4a5a
      allowsLifecycleRegistration=true
      isBeingEnabled=false
    ]
  Version:
    ProtocolLib v5.3.0
  Java Version:
    21.0.8
  Server:
    1.21.8-2493-07108b7 (MC: 1.21.8)