Hi there, i recently updated to forgery-3.2.1+1.18.jar and it appears to be incompatible with Big Brain https://www.curseforge.com/minecraft/mc-mods/big-brain
I get this error whenever i try to launch my WIP modpack while Forgery 3.2.1 is installed but reverting back to 3.2.0 works fine:

Here's the log file:
latest.log

Ah so it wasn't BigBrain but Nostalgic Tweaks instead?

yup, no clue why BigBrain got blamed for it but as far as i tested it works fine.

it could of just as easily been any mod though (that redirects a field), i think it might of been possible for this kind of crash to happen on fabrication before 3.2.1? it was just a lot less likely. fixed in the next release