Trying to launch the game comes up with this error

The game crashed whilst initializing game
Error: java.lang.NullPointerException: Cannot read field "allow_sweeping" because "net.bettercombat.BetterCombat.config" is null

The thing probably causing this issue is the Comforts mod, since that's the only one relating to sleeping.

Please try updating Better Combat.

Failing to fill issue form.