Well tf chest is bugged when i kill any boss in the 1.21.1 recent version for some reason here the game just crashes

[bernardesjuan6-coder]

Context

If you look on that you can see the issue on that link etc

Crash Report

https://mclo.gs/LiGJZO9

[bernardesjuan6-coder]

Everytime i kill an boss this happens also it's frequently i misurdestood is 121.1

[WeissRu]

Try updating TFBR mod to version 4.2.2.
The twilightforest/block/TFChestBlock class mentioned in log is no longer used in the latest code. (See the relevant commit: Dimas-Studio/TFBR@827fc50)