I posted this log https://paste.ee/p/RE8Sa in the ModdedMinecraft discord and they believe it is an issue with this mod. It happens in a world or in the menu.

I fixed it now in version 1.0.16a.

Thanks for the report!

Crash still happens with 1.0.16a.
https://pastebin.com/bL0JqrHy

Whoops, I just assumed this was because of incorrect mappings. This time I actually fixed the issue in version 1.0.17.

Thanks!