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Yes, it workes now. Thanks again for helping

I think it's one of my mod configs, because it always crashes when it says "Loading mod configs". Thanks for your help. I'm going to delete some config files from unused mods now.

Im confused. I mean like in C:\Users/User/AppData\Roaming\.minecraft or somewhere else. I'm not that good when it gets to exactly finding files

Where can I find this files?

I don't know if It was my fault that forge dosn't load (Ingame settings) or if it is something else. And somehow I only get this error on 1.13 Forge and 1.14 Forge but not on 1.8 Forge, 1.12 Forge, 1.13 Vanilla or 1.14 Vanilla Minecraft The game crashed whilst rendering overlay Error: com.electrowill.nightconfig.core.io.ParsingException: Not enough data available For me it looks like a "Not enough Memory to use" message.