In some cases, after loading into a world with the mod installed, the game immediately crashes. I believe an existing blood particle is causing it, but I don't know what else this crash report details.
I am on 1.20.1 Forge 47.3.5 with mod version 1.2.1.

modlist.txt (Full modlist)

crash-2024-10-07_22.52.32-server.txt (Crash file)
latest.log (Log file)

I've noticed this issue with a couple of other users. I have a new version of the mod coming out soon with tons of bug fixes, and this will be one of them. Thanks for the report!

Should be fixed as of my latest release. Closing this issue.