https://bytebin.lucko.me/n6eQpzi2bh

I had the same problem when trying to load into a newly created world, but the problem didn't ocur when entering a superflat world.

NP

Here is the latest log.
latest.log

I'm getting the same error

I'll look into this tomorrow, for now you can disable smallThreadingDetector in the FerriteCore config as a workaround. Can one (or even both) of you upload a full log (latest.log)? That should have information on the "other half" of the crash.

I have the same issue as well

Crash log: https://gist.github.com/isaaclepes/101552a456b1eff0ba5e03c4b7f63f88
Debug Log: https://gist.github.com/isaaclepes/cdf6d0e3df44628746735cf86484e5cd
latest log: https://gist.github.com/isaaclepes/e5f1396f653d1050afc1f24245dcbd73

Same, rekon I have several mods in the server crashing. Also mine is on fabric, and not during world load but after a while

Also got the error, Temporary fix works, thanks for sharing it,

I had the same problem when trying to load into a newly created world, but the problem didn't ocur when entering a superflat world.

And that's the problem, I only tested the second one in dev… Even though it's clear in hindsight that worldgen is a much more important test case.

I'll remove the SmallThreadingDetector code for now; the problem is that I missed an important "valid" case and am reporting it as a race condition. I think I can fix it, but it's not trivial and I won't have the time for that in the next 1.5 weeks or so.

Reverted the commit adding the feature for now, I'll revisit this when I have some time:
Commit: 277b25f
CF (Forge): https://www.curseforge.com/minecraft/mc-mods/ferritecore/files/3638442
CF (Fabric): https://www.curseforge.com/minecraft/mc-mods/ferritecore-fabric/files/3638441
Modrinth (Fabric): https://modrinth.com/mod/ferrite-core/version/c9p5gemS