Describe the bug
A clear and concise description of what the bug is.
Everytime someone writes on chat gives a massive spam:
https://gist.github.com/arturek1666/1aaafb3bf971eaf4329d2dbb5b3366b7
To Reproduce
Steps to reproduce the behavior:

1. Go to server (Ultra Customizer has to be installed)
2. Write in chat any messsage
3. On console you will then see this error (Error can be find in Describe the bug)

Expected behavior
No error in console when players write a message in chat

Version Info
Provide your ProtocolLib install info with /protocol dump through pastebin.
https://gist.github.com/arturek1666/3fee0dc9c53052a1d296bda1db6c24ff

thats not a protocollib bug, talk to the author.

Try it with Paper build number 90+. This could be a bug in Bungee chat included in Spigot.

I did talk he replayed: It's protocollib issue xD

I can confirm issue was resolved. Closing :)