[16:30:14 WARN]:    [ProtocolLib] Version (MC: 1.20.4) has not yet been tested! Proceed with caution.
[16:30:15 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.IllegalArgumentException: Unable to find a field that matches {modifiers=[required: 10000, banned: 1000], type={ type input instanceof interface java.util.Map }}
  	at ProtocolLib.jar//com.comphenix.protocol.reflect.FuzzyReflection.getField(FuzzyReflection.java:352)
  	at ProtocolLib.jar//com.comphenix.protocol.injector.packet.PacketRegistry.createNewRegister(PacketRegistry.java:188)
  	at ProtocolLib.jar//com.comphenix.protocol.injector.packet.PacketRegistry.initialize(PacketRegistry.java:292)
  	at ProtocolLib.jar//com.comphenix.protocol.injector.packet.PacketRegistry.getClientPacketTypes(PacketRegistry.java:327)
  	at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterManager.<init>(PacketFilterManager.java:120)
  	at ProtocolLib.jar//com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:121)
  	at ProtocolLib.jar//com.comphenix.protocol.ProtocolLib.onLoad(ProtocolLib.java:183)
  	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:36)
  	at org.bukkit.craftbukkit.v1_20_R3.CraftServer.loadPlugins(CraftServer.java:519)
  	at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:310)
  	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1146)
  	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:323)
  	at java.base/java.lang.Thread.run(Thread.java:833)
  Dump:
  Parameters: 
    [NULL]
  Sender:
    com.comphenix.protocol.ProtocolLib@47c5ce3d[
      statistics=<null>
      packetTask=<null>
      tickCounter=0
      configExpectedMod=-1
      updater=com.comphenix.protocol.updater.SpigotUpdater@5d79f9ad
      redirectHandler=<null>
      scheduler=com.comphenix.protocol.scheduler.DefaultScheduler@186e1e8d
      commandProtocol=<null>
      commandPacket=<null>
      commandFilter=<null>
      packetLogging=<null>
      skipDisable=false
      isEnabled=false
      loader=io.papermc.paper.plugin.manager.DummyBukkitPluginLoader@4f25fba0
      server=CraftServer{serverName=Purpur,serverVersion=git-Purpur-2136,minecraftVersion=1.20.4}
      file=plugins\ProtocolLib.jar
      description=org.bukkit.plugin.PluginDescriptionFile@34de51ac
      pluginMeta=org.bukkit.plugin.PluginDescriptionFile@34de51ac
      dataFolder=plugins\ProtocolLib
      classLoader=PluginClassLoader{plugin=ProtocolLib v5.1.0, pluginEnabled=false, url=plugins\ProtocolLib.jar}
      naggable=true
      newConfig=YamlConfiguration[path='', root='YamlConfiguration']
      configFile=plugins\ProtocolLib\config.yml
      logger=com.destroystokyo.paper.utils.PaperPluginLogger@3cb4b312
    ]
  Version:
    ProtocolLib v5.1.0
  Java Version:
    17.0.1
  Server:
    git-Purpur-2136 (MC: 1.20.4)