Describe the bug
Well, I didn't known why this happened, after deleting plugins used ProtocolLib as dependency one by one, I found that maybe ProtocolStringReplacer causes this problem.
To Reproduce
Install ProtocolLib and ProtocolStringReplacer.
In overworld, summoning a cat.
See error. If not, restarting the server and try again.
Describe the bug Well, I didn't known why this happened, after deleting plugins used ProtocolLib as dependency one by one, I found that maybe ProtocolStringReplacer causes this problem.
To Reproduce
Stacktrace https://pastebin.com/viTwY8TM
Server Informations