[18:13:28 WARN]: [ProtocolLib] Version (MC: 1.20.2) has not yet been tested! Proceed with caution.

[18:13:30 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 (1).jar//com.comphenix.protocol.reflect.FuzzyReflection.getField(FuzzyReflection.java:352)

at ProtocolLib (1).jar//com.comphenix.protocol.injector.packet.PacketRegistry.createNewRegister(PacketRegistry.java:188)

at ProtocolLib (1).jar//com.comphenix.protocol.injector.packet.PacketRegistry.initialize(PacketRegistry.java:292)

at ProtocolLib (1).jar//com.comphenix.protocol.injector.packet.PacketRegistry.getClientPacketTypes(PacketRegistry.java:327)

at ProtocolLib (1).jar//com.comphenix.protocol.injector.PacketFilterManager.(PacketFilterManager.java:120)

at ProtocolLib (1).jar//com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:121)

at ProtocolLib (1).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:40)

at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:36)

at org.bukkit.craftbukkit.v1_20_R2.CraftServer.loadPlugins(CraftServer.java:512)

at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:273)

at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1086)

at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:315)

at java.base/java.lang.Thread.run(Thread.java:833)

Dump:

Parameters:

[NULL]

Sender:

com.comphenix.protocol.ProtocolLib@5f376ef8[

statistics=

packetTask=

tickCounter=0

configExpectedMod=-1

updater=com.comphenix.protocol.updater.SpigotUpdater@67b36fc1

redirectHandler=

scheduler=com.comphenix.protocol.scheduler.DefaultScheduler@2fc44e18

commandProtocol=

commandPacket=

commandFilter=

packetLogging=

skipDisable=false

isEnabled=false

loader=io.papermc.paper.plugin.manager.DummyBukkitPluginLoader@749d3234

server=CraftServer{serverName=Paper,serverVersion=git-Paper-243,minecraftVersion=1.20.2}

file=plugins/ProtocolLib (1).jar

description=org.bukkit.plugin.PluginDescriptionFile@6c087a40

pluginMeta=org.bukkit.plugin.PluginDescriptionFile@6c087a40

dataFolder=plugins/ProtocolLib

classLoader=PluginClassLoader{plugin=ProtocolLib v5.1.0, pluginEnabled=false, url=plugins/ProtocolLib (1).jar}

naggable=true

newConfig=YamlConfiguration[path='', root='YamlConfiguration']

configFile=plugins/ProtocolLib/config.yml

logger=com.destroystokyo.paper.utils.PaperPluginLogger@7ca0cfd7

]

Version:

ProtocolLib v5.1.0

Java Version:

17.0.7

Server:

git-Paper-243 (MC: 1.20.2)

There is a known issue that builds >669 are bugged and players are unable to join.

Try using this build https://ci.dmulloy2.net/job/ProtocolLib/669/ and see if that solves the issue