Samlegamer

I had the same problem in 1.12 my game would not launch and stayed in the task manager. In fact if you remove konkrete + fancymenu it should work again.

I strangely don't have this problem in my logs, try to install AI Reducer maybe it will solve your problem. https://www.curseforge.com/minecraft/mc-mods/ai-reducer

Hello I redid some leaf textures.   https://www.mediafire.com/file/7gd3auj7fc23yz1/Forestry+Leaves+Textures.zip/file