Describe the bug
Crash during ammunition creation in an ammunition workbench, causing also crash on reload,
Caused by a null pointer exception.

To Reproduce
Steps to reproduce the behavior:

1. create a revolver core (tested with the first type, i don't remember the name)
2. fill a casing with gunpowder
3. input them in an ammo workbench
4. crash
5. reloading the world cause a crash

Expected behavior
well, not crashing and getting the bullet

Logs
crash-2022-01-28_21.01.39-client.txt

Environment

• OS: windows 10
• Minecraft version: 1.12.2
• Forge version: 14.23.5.2855
• Immersive Intelligence version: 0.2.1
• Immersive Engineering version: 0.12-98

the modlist can be found inside the crashlog, i can add it separately if needed, it's a chonky modpack, but i can test it in a simpler environment

Fixed.