I finally managed to get the game to work with the latest recommended forge version. I had to update java (I was something like 146 versions behind), then make sure all the mods that I had were updated to their latest versions, and finally the game started working properly. The fact that I was using an extremely outdated version of java might explain a few other issues as well.
I recently installed a newer version of forge 1.12.2 for the twilight forest mod to work. The game launches fine, but when I attempt to start a world the game crashes. I have attached a copy of the complete game logs. Can anyone figure out why this crash is happening, because I am stumped.
latest.log