I updated protocollib to the newest version but now its not working with my paper 1.21.1 version and majority of my plugins are disabled because of it, I pasted logs below, if theres anything I can do to fix it, please let me know.

https://mclo.gs/9OUkvGx

Please and Thank You,
DJDVS

Based on the logs you provided, the version of your server is 1.21, not the 1.21.1 you claimed
It also shows that your ProtocolLib version is v5.1.0, not the latest version you claimed, the current latest version is v5.3.0 #-731
Dev Builds