Okay, so my world won't launch. While I was building, it suddenly turns black and.... crashed. I tried to launch the world back but it crashed again. After trying to figure out what's causing the problem, i realized that, all my world cannot be launched. Even the freshly new created world crashes! If you wanted PC info and crash report and also list of mods I used, Go ahead.
Note: Previously all worlds can be launched, but now nothing launches
I mean only the worlds won't launch, but minecraft launches. Only the worlds.
Note: I haven't added any new mod. I still think it has something to do with the mods.