Cannot load all music from USB HD

I just downloaded and installed latest version of Volumio on my Raspberry Pi3. (I have used Volumio for like 10 years). The install appeared to go fine. I attached a 1TB USB HD with ~700GB of music. The format was: “Music - Definitive”/artist/album/songs. I did Sources “ReScan” when it finished, most BUT NOT ALL of the music appeared. Some entries showed name of album, but when opened showed “No Items” Other albums and even some artists never even showed up. I have done both “Update” and Rescan" multiple times with the same result.
HELP!!

Please provide a log after a full scan. I suspect that files are damaged.