Versioning
Which version of Minecraft, which mod version, and which modloader are you using (Forge, Neoforge etc).
Some error reports don't even specify which mod has a bug...

USING VER 1.16.5 ON FORGE

What did you do
What do i have to do on my end to see the problem.

CRASHES EARLY, CAN'T LOAD CORRECTLY

Expected behavior
A clear and concise description of what you expected to happen.

THE MOD TO LAOD CORRECLTY

Screenshots/Video
If applicable, add media to help explain your problem.

Thanks for reporting this.
b3f22d1
717b9b9
I fixed it, threw in the newer Ruins spawning algorithm from 1.19.2 for your troubles, and pushed a new version to curse.