I'm on a mac, running 1.12.2, i'm using the 1.06.4 jar which the site i got it from said was compatible, https://www.curseforge.com/minecraft/mc-mods/oauth/files this thing, but now i have this error

can you help, i'm just trying to play some pixelmon with my friends

Oh yeah the forge version is the 1.12.2 one that ends in a 60 i believe, its the latest one, i probably shouldve mentioned that in the first post sorry

I believe this is a duplicate of #20