Issue description:
litterally nothing since I cant explain other than newest 1.12.2 version
If crashed, link to crash report (use a site such as pastebin):
https://pastebin.com/9WqFzrWW
Versions:

• Minecraft: 1.12.2
• Forge:
• Mantle:
• Tinkers Construct:

Can it be reproduced with just Tinkers Construct? If not, list the other mods required to reproduce the issue.

Duplicate of #4441, not our bug. LUCraft is using one of our classes wrongly, report to them.