Describe the bug

1. What did you expect to happen?
   Game to launch.
2. What actually happened instead (i.e. what was the bug)
   Game crashed on startup.
3. If it was a crash, upload the full log file (latest.log)
   https://paste.dimdev.org/iramagefuy.mccrash

To Reproduce
1: Install ExPetrum and TerraFirmaCraft together.

Meta Info

• TFC Version: 1.12.2-0.23.2.70

If my assumptions are correct, something to do with how TerraFirmaCraft changes item stack sizes and the way ExPetrum handles items is conflicting.

ExPetrum:
V0idWa1k3r/ExPetrum#23

ExPetrum's backpack item is the problem here. It doesn't do any checks on whether or not a capability exists before just returning it's inventory, unlike basically every other item capability in the game. On them to fix.