1.20.1 My Forge 1.20.1 wont load even without mods

[EthernetUM]

Im trying to create a modpack for me and my friends using forge. I never liked forge so i used fabric at first. But there were some mods I really wanted from forge, so i tried to switch to that. I added the mods (yes the mod versions that are forge supported and version supported) into the mod folder. I kept getting crashes. I then removed the mods one by one till there was nothing left. I tried it one last time and crash again. So I tried to download actual forge and not the forge on OverWolf. I installed it without mods and it still crashed. Deleted and reinstalled Java 17 and nothing.

I think this is the link for the crash report https://pastebin.com/hQUhArhN

 

[TileEntity]

java.util.ConcurrentModificationException
	at java.base/java.util.HashMap.computeIfAbsent(Unknown Source)
	at Genesis//com.moonsworth.lunar. ...

Looks like an issue with the Launcher - Make a test with another Launcher like MultiMC, AT Launcher or Technic Launcher or try the original one

[EthernetUM]

my bad i finally found the way to find the support forums. Ill try this out 

 

 

[EthernetUM]

ok so it opened and it works for some reason without mods. does that mean i can only use forge with this launcher?

 

[TileEntity]

Maybe it is a specific mod which is not working with this launcher