Describe the bug
I'm the author of the mod Primal Magick, and wanted to report an interaction issue between our two mods that was reported on my board. Basically, Primal Magick has a mob type called Treefolk that will, among other things, attempt to fertilize bonemealable blocks near them. If they attempt to do this to an Alpha Grass block, the server will crash. I don't think this is a bug on my end, after initial investigation, but I could be wrong.

Crash Logs
https://pastebin.com/JSSYnFNc

How To Reproduce
Steps to reproduce the bug:

1. Place an Alpha Grass block in a small, fenced enclosure.
2. Use a Treefolk Spawn Egg to spawn a Treefolk within the same enclosure.
3. Wait. It doesn't take long, in my experience.

Version
Minecraft Version: 1.21

Modloader Version: Forge 51.0.33

Mod Version:
Regions Unexplored 0.5.6.1
Primal Magick 5.0.0-beta

Screenshots
n/a