Guidelines

• By checking this box, I am saying that I have read the guidelines and believe to be following them to the best of my ability

Minecraft Version

1.20.1

Mod Version

4.1

Mod Loader

Forge

Mod Loader Version

47.2.17

Describe the bug

I was messing around in a pretty large modpack i made (231 mods) and when i put the iron command block sword in my inventory, my game crashed.

Steps to Reproduce

1. Go to the creative inventory
2. Put the iron command block sword into your hotbar
3. The game crashes

Crash Reports/Logs

https://mclo.gs/hkf4bhP

Is OptiFine installed?

• OptiFine is installed

Screenhots

No response

Mod List

good ending is causing the issue remove it until they fix it on there end

Yeah that appears to be the issue. Try removing that mod, and if that doesn't work, mind sending the crash report file?