So I just started making my first Minecraft Mod as a test to see how well I could do while following along with tutorials. (I know Scala and I've messed around a bit with Java, so I'm not a total noob, but that also means I might not know everything you are talking about). Everything was going smooth until I got to the crafting part. When ever I try and craft either of the 2 items that I've made, the game crashes when I put the final item into the crafting table.
Eclipse Console Log
Crash report that was saved to my pc
Main Class
Items Class
Like I said, this is my first Minecraft mod. I would like to know how to fix this problem, but if you have any tips to improve my code, or if I'm doing something completely wrong, I would love to know that as well.