Gnome-terminal won't open

Hello guys, so I’ve ran into a problem with my gnome terminal… i had to format my hdd and did a fresh installation of manjaro and as usual i updated the system and the terminal wasn’t opening (like its usual) so i checked my locale.gen and uncommented en_US.UTF-8 and it did actually work until today where i can’t no longer open my terminal.

Any ideas what it could be?

It also gives me this error:
# Locale not supported by C library.
# 	Using the fallback 'C' locale.

It is difficult to say what is the cause but It is an error in your locale config - check locale.gen again - then rebuild using locale-gen script.