I’d inspect all music by this artist. Look for damaged files.
If you have mp3 files, you can use this software to find invalid or damaged files: MP3 Diags download | SourceForge.net
After ensuring that all is in order, perform a full plex Dance with all albums by this artist.
Leave a server maintenance cycle inbetween removing and re-adding the files (i.e. over night by default).
