HELP！！！ HOW CAN I FIX THE LIBRARY！！！

The library date seems like damaged in my USB disk, I think this "export.pdb" file might has something wrong. But I couldn't find a way to fix or edit it . Is there someway can help me restore my library back .

p.s. All of my music file and the other system file are complete

If your library on the computer is fine, format the USB drive and re-export everything. You likely disconnected the USB drive while it was in use and the library became damaged.

I've never backed up my usb drive, and I've never used the computer's library, usually I just drag music directly into the list on the rekordbox device, so I'm not sure where to look for the library on the computer and if it's complete. Is there a way to backtrack the export.pdb file to its pre-corruption state or edit it manually? or is there a way i can fix this？