Describe the bug. 1.12 is no longer supported, do not make bug reports for it.
Sometimes this error will be the last thing in console before a crash and sometimes the server will continue running and this error will pop into console a few times in a matter of minutes.

To Reproduce
Steps to reproduce the behavior:

1. Start a server with BOTH Performant and Rats mods installed.
2. Give it a few minutes
3. This error will be put into console
   ?. The server will crash or the server will stutter for a few seconds and continue as normal.

Expected behavior
No errors in console.

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

Versions
Performant 3.30m
Rats 7.1.0

Logs
the error
I have also reported the bug to Performant

according to performant, it should be fixed so im gonna close this