I made a modpack on the previous version of Spell Engine, and everything worked fine, but when switching to the new version, I started getting the same crash, and after experimenting with different ways to enable and disable other mods, I still didn't understand what was wrong. I attach a crash log, as well as additional information.

Version 1.21.1 Fabric.

Fabric Loader 1.16.10.

latest.log

Okay, I did a little research, and it turned out that it's all about mods from the authors of cleannrooster and catlogamer04_2

I don't know what specific mods are involved yet, because some of them have been updated for the latest version of Spell Engine, so I'm still studying the issue.

As the project changelog says:

Update all of your mods, remove the ones with no support for 1.5.X.