Plex Not Scanning Music Files

I just purchased a new HD and moved my music library to the new drive. I set up a library called “Music 2018” and the correct directory psth. Plex lists all the band folders and subfolders of each album, but there are no mp3 files in any of the folders.

My Music 2016 Library that is still on the old HD has all folders, subfolders, and mp3s.

Any idea what the issue could be?