Forge log link: https://pastebin.com/4Qdgcbk2

Problem: Right clicking on spirit forge causes the game to crash

Expected behaviour: Something besides a crash

Steps to reproduce the problem:

• Go to creative mode
• Place a Spirit forge block
• Right click on it

Hmm, is your multiblock fully formed or not?
(eitherway, it shouldn't crash)

Fixed in bd45056