Version Information
Forge version: forge-14.23.5.2847
Botania version: Botania+r1.10-362.jar

Further Information

Link to crash log: https://gist.github.com/Feynman521/be79a018adf01e5f5b88f376bbb6d45d
Steps to reproduce:

1. Enable mob shedding
2. Rewrite blaze shedding to
   S:"minecraft:blaze.item"=minecraft:blaze_powder
   I:"minecraft:blaze.lexiconDisplaySize"=40
   I:"minecraft:blaze.metadata"=0
   I:"minecraft:blaze.rate"=8000
3. Look at the second page of Natural Shedding in the lexicon.

What I expected to happen:
Not crash.
What happened instead:
Crash.

Crashes with botania version 362, so edited the issue.

Also, this problem was possibly mentioned on 2019 may 7th, but the steps to reproduce the crash are not complete. You have to look at the second page of Natural Shedding for the crash.