Issue Description
Crash a few seconds after loading world.

Edit: It was after using the Slime Slingshot (from tinker's construct) when I logged into the world

Modpack version (Do not use "latest")
1.49

Logs

https://hastebin.com/etebazivey.rb

Reinstall the modpack :) please let me know if it helps.

No more issues after reinstalling, thanks :)

Awesome :D