Crash report: https://pastebin.com/2FB7Ns52

Latest log: https://pastebin.com/n745SUBm

Sorry for the big delay, fixed in latest version

Hello and thanks for the report!
The crash report is unrelated but the log shows a bug indeed. The bug is weird, I will investigate and get back to you when I have time

I was not able to reproduce your issue.
Could you please try with only my mod and the fabric api and see if it's still crashing?

[EDIT] And update the fabric api, just in case

I tried with just your mod and the updated fabric api, I had no doubt that it would work, the problem is clearly the conflict with some mods in the list.

Modlist: https://pastebin.com/5TBagQSY

Seems like an incopatibility with levelZ

Thanks a lot for your investigation work! I will check that and get back to you :)

I think i have this bug as well. It crashes and i have levelz installed as well.