Mod conflict? If so, please clarify which mod is conflicting!
Maybe quark, somehow?

API/Modloader
Forge

Describe the bug
I changed a config in Quark (variant chest recipes to off) and relaunched and got this screen

Changing the config back to on fixes it, oddly. I've seen this error before and it was fixed by only restarting with no changes, but this one didn't.

Logs
Use: https://paste.ee/ and paste the links. if log is huge please upload those
Please provide:
Crashlog - N/A
Debug.log - debug.log file
Latest.log - https://pastebin.com/s03pX5qJ

This is using byg-1.1.6

Duplicate of #265.

Fixed in latest beta