The Forge file in the 'Versions' folder doesn't match with the forge option on the Minecraft launcher and as a result my Minecraft game keeps crashing when I attempt to use forge, however it doesn't crash if I play the normal game. There is one number different. In my versions folder, the forge name is: 1.12.2-forge1.12.2-14.23.2.2618 whereas in my launcher is says: 1.12.2-forge1.12.2-14.23.2.2617. I have underlined the two numbers that are different and hope that someone responds with a fix.
Thanks for the help!!