So I downloaded and installed Forge 1.7.10 a few days ago and installed some mods in it, everything was fine. Now I tried to install Forge 1.12.2 but it doesn't work. When I start the game in the launcher, it puts me back to the launcher and tells me " GAME CRASH An unexpected issue occured and the game has crashed. We're sorry for the inconvenience."
I downloaded the recommended 1.12.2 Forge version here http://files.minecraftforge.net/
I don't know much about codes/files or that kind of stuff, I just followed a bunch of youtube tutorial on how to install mods/Forge for minecraft.
I tried to download different 1.12.2 forge versions but it still didn't work.
I didn't install any 1.12.2 mods yet.
Here's a bunch of guides, tutorials and other stuff I tried to follow to fixe the problem.
http://minemum.com/troubleshooting-forge
https://imgur.com/a/N7sQD
https://www.youtube.com/watch?v=U3mQi_7WKV8
https://www.youtube.com/watch?v=WL-vZ-ZJXIA&t=383s
https://paste.ubuntu.com/p/JfQ4FdMSSH/