Topic category: Bugs and solutions
I've had this issue since the last couple updates to my mod:
The game crashed whilst rendering overlay
Error: net.minecraft.util.ResourceLocationException: Non [a-z0-9/._-] character in path of location: insanity_dimension:blocks/insanity ore
I haven't asked for help here since it appeared, which I should have done sooner. I tried everything to fix it, but nothing worked. There is no longer a space with that file, but I still get the same error. The game almost starts up, but when it gets to the end of loading, it crashes suddenly.