The latest.log is angry at your models, it would seem: https://gist.github.com/NillerMedDild/ec2d4109e4496206b97c4cad2596cebe#file-gistfile1-txt-L1118

Yeah this seems to be a 1.13+ thing. I noticed most other mods just add dummy blockstate and model files, so I think I will just do the same.
Currently custom IBakedModels can only be added during the ModelBakeEvent, since vanilla doesn't use anything except json files, yet the errors already gets produced before that.

Well that seems silly, I'll happilu take dummy files to suppress the log spam :P thanks for the quick response again!

I added the dummy files in version 1.0.2, so the console spam is now gone 😁

Thanks :D