Hi, i have paper 1.20.6 and i downloaded the latest version of protocollib(build 726). I put in pom.xml all dependences with version 5.1.0(it doesn't work if i put 5.2.0 or 5.3.0 for some strange reason) and when i execute my plugin with protocollibhook, it doesn't work(the console give me that the "ProtocolManager" is null). i tried to get other builds from protocollib, but none of them work.

this is the error in my console with the latest build of protocollib that support mc 1.20.6: https://paste.gg/p/anonymous/f5443e4c44444d9cb5f53c5698a11a74

You shouldn't package ProtocolLib into your plugin. ProtocolLibs is designed to be run as a single plugin which other plugins can call via the ProtocolLibrary class.