everything was working perfectly fine and just out of no where it stopped working and i cant seem to figure out anything on how to fix it and i didnt mess with anything that ik off i just need help what can i do to get it back up
Uknown database (DB) mean the DB name it tries to connect to is non-existent in your actual DB.
You most likely changed targeted DB name inside server.cfg or accidentally changed/deleted/altered the name of DB itself on your server.
Is “qbcoreframework_30d107” available inside your DB registry?