Version Information

Forge version: 1.16.1-32.0.88
Botania version: 1.16-399

Further Information

Link to crash log: PasteBin
Steps to reproduce:

1. Take Damage
2. Server Crash
   (Maybe it's because I created the world before adding Botania)

What I expected to happen:
Take Damage

What happened instead:
Server Crash

Post the entire log please

https://pastebin.com/UHseQsKp

this seems like a mod incompatibility. can you try with just botania then add in mods until it crashes?

Is it because I created the world before adding Botania?

No that shouldn't be an issue, I've added botania to existing worlds and it works fine

This issue is stale because it has been open for a while with no activity. Remove stale label or comment or this will be closed soon.