Question Error with the ProtocolLib plugin on PaperMC-1.20.6

[Reizi]

When starting a local server on PaperMS, this error occurs and I can’t figure out how to solve it.
[22:31:24 INFO]: [ProtocolLib] Loading server plugin ProtocolLib v5.2.0-SNAPSHOT-679 [22:31:24 WARN]: [ProtocolLib] Version (MC: 1.20.6) has not yet been tested! Proceed with caution. [22:31:26 ERROR]: [ProtocolLib] Assuming package version: v1_20_R1 [22:31:26 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:183) at ProtocolLib.jar//com.comphenix.protocol.injector.packet.PacketRegistry.initialize(PacketRegistry.java:334) at ProtocolLib.jar//com.comphenix.protocol.injector.packet.PacketRegistry.getClientPacketTypes(PacketRegistry.java:369) 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.CraftServer.loadPlugins(CraftServer.java:510) at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:286) at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1136) at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:323) at java.base/java.lang.Thread.run(Thread.java:1583) Dump: Parameters: [NULL] Sender: com.comphenix.protocol.ProtocolLib@2935a1ca[ statistics=<null> packetTask=<null> tickCounter=0 configExpectedMod=-1 updater=com.comphenix.protocol.updater.SpigotUpdater@26d09140 redirectHandler=<null> scheduler=com.comphenix.protocol.scheduler.DefaultScheduler@22ef5fa1 commandProtocol=<null> commandPacket=<null> commandFilter=<null> packetLogging=<null> skipDisable=false isEnabled=false loader=io.papermc.paper.plugin.manager.DummyBukkitPluginLoader@4a13ce5e server=CraftServer{serverName=Paper,serverVersion=1.20.6-138-906df69,minecraftVersion=1.20.6} file=plugins\.paper-remapped\ProtocolLib.jar description=org.bukkit.plugin.PluginDescriptionFile@2e0dd6b8 pluginMeta=org.bukkit.plugin.PluginDescriptionFile@2e0dd6b8 dataFolder=plugins\ProtocolLib classLoader=PluginClassLoader{plugin=ProtocolLib v5.2.0-SNAPSHOT-679, pluginEnabled=false, url=plugins\.paper-remapped\ProtocolLib.jar} naggable=true newConfig=YamlConfiguration[path='', root='YamlConfiguration'] configFile=plugins\ProtocolLib\config.yml logger=com.destroystokyo.paper.utils.PaperPluginLogger@42f88959 lifecycleEventManager=io.papermc.paper.plugin.lifecycle.event.PaperLifecycleEventManager@3902c372 allowsLifecycleRegistration=true ] Version: ProtocolLib v5.2.0-SNAPSHOT-679 Java Version: 21.0.3 Server: 1.20.6-138-906df69 (MC: 1.20.6) [22:31:27 INFO]: [ProtocolLib] Enabling ProtocolLib v5.2.0-SNAPSHOT-679 [22:31:27 ERROR]: ****************************************************** [22:31:27 ERROR]: *** ProtocolLib does not support plugin reloaders! *** [22:31:27 ERROR]: *** Please use the built-in reload command! *** [22:31:27 ERROR]: ****************************************************** [22:31:27 INFO]: [ProtocolLib] Disabling ProtocolLib v5.2.0-SNAPSHOT-679

 

[stefvanschie]

I'd recommend updating ProtocolLib. Their build page states that version 5.2.0 only works up to Minecraft 1.20.4. Version 5.3.0 works for 1.20.5 and later, which is what you are using.