“Unable to load database” Rekordbox 6.0

I don’t know why I have this message. I don’t know what I’m doing wrong. I don’t know if the programme has crashed or is taking its time to process something. The programme gives me know idea why it’s stopped working. I just want a stable product I can rely on. I just want to enjoy a mix instead of being anxious will an operation complete. If I’m doing something wrong, or haven’t followed something correctly, I want to know what it is and not play guessing games.