I can't run any 1.12 versions of forge (1.12, 1.12.1 or 1.12.2). I am perfectly capable of launching any other versions, and the Vanilla Minecraft from the launcher, but when I attempt to launch 1.12 with Forge, the process simply stops, no crash, or anything of the sort. The launcher closes itself, there is no error message, it simply stops the process. The launcher doesn't reopen. How do I get it to run properly?
(I have previously been able to run it, but now it just stops)