Describe the bug
When I start the server ProtocolLib can't be loaded.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Version Info
Provide your ProtocolLib install info with /protocol dump through pastebin.

Additional context

[10:01:02] [Server thread/WARN]: [ProtocolLib] Version (MC: 1.16.3) has not yet been tested! Proceed with caution.
[10:01:02] [Server thread/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.NoClassDefFoundError: Could not initialize class com.comphenix.protocol.PacketType$Play$Client
at com.comphenix.protocol.PacketType.getLookup(PacketType.java:602)
at com.comphenix.protocol.PacketType.fromCurrent(PacketType.java:786)
at com.comphenix.protocol.injector.netty.NettyProtocolRegistry.associatePackets(NettyProtocolRegistry.java:207)
at com.comphenix.protocol.injector.netty.NettyProtocolRegistry.initializeNew(NettyProtocolRegistry.java:184)
at com.comphenix.protocol.injector.netty.NettyProtocolRegistry.initialize(NettyProtocolRegistry.java:49)
at com.comphenix.protocol.injector.netty.ProtocolRegistry.(ProtocolRegistry.java:59)
at com.comphenix.protocol.injector.netty.NettyProtocolRegistry.(NettyProtocolRegistry.java:43)
at com.comphenix.protocol.injector.packet.PacketRegistry.initialize(PacketRegistry.java:54)
at com.comphenix.protocol.injector.packet.PacketRegistry.getClientPacketTypes(PacketRegistry.java:112)
at com.comphenix.protocol.injector.PacketFilterManager.(PacketFilterManager.java:211)
at com.comphenix.protocol.injector.PacketFilterBuilder.buildInternal(PacketFilterBuilder.java:185)
at com.comphenix.protocol.injector.PacketFilterBuilder.build(PacketFilterBuilder.java:177)
at com.comphenix.protocol.ProtocolLib.onLoad(ProtocolLib.java:198)
at org.bukkit.craftbukkit.v1_16_R2.CraftServer.loadPlugins(CraftServer.java:394)
at net.minecraft.server.v1_16_R2.DedicatedServer.init(DedicatedServer.java:204)
at net.minecraft.server.v1_16_R2.MinecraftServer.w(MinecraftServer.java:939)
at net.minecraft.server.v1_16_R2.MinecraftServer.lambda$a$0(MinecraftServer.java:177)
at java.lang.Thread.run(Thread.java:748)
Dump:
Parameters:
[NULL]
Sender:
com.comphenix.protocol.ProtocolLib@bb73884[
statistics=
backgroundCompiler=
packetTask=-1
tickCounter=0
unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@392b45b4
configExpectedMod=-1
updater=com.comphenix.protocol.updater.SpigotUpdater@34335708
redirectHandler=
commandProtocol=
commandPacket=
commandFilter=
packetLogging=
skipDisable=false
isEnabled=false
loader=org.bukkit.plugin.java.JavaPluginLoader@792ffb8d
server=CraftServer{serverName=Paper,serverVersion=git-Paper-231,minecraftVersion=1.16.3}
file=plugins/ProtocolLib.jar
description=org.bukkit.plugin.PluginDescriptionFile@280b7508
dataFolder=plugins/ProtocolLib
classLoader=PluginClassLoader{plugin=ProtocolLib v4.6.0-SNAPSHOT-b481, pluginEnabled=false, url=plugins/ProtocolLib.jar}
naggable=true
newConfig=YamlConfiguration[path='', root='YamlConfiguration']
configFile=plugins/ProtocolLib/config.yml
logger=com.destroystokyo.paper.utils.PaperPluginLogger@db8cdd
]
Version:
ProtocolLib v4.6.0-SNAPSHOT-b481
Java Version:
1.8.0_262
Server:
git-Paper-231 (MC: 1.16.3)