Kodi V21 Library

PROBLEM     I have upgraded to Kodi v21.0 from v20. Movies and TV shows are stored as mkvs and strms each in their own folder on a NAS. When using the Kodi 21 Library to access the Movie Library> Titles, it displays 2 dots. When accessing Library>Sources>videolibrary, it fails w/msg “Path not found or invalid”. But when accessing the Library>TV Show Library>Titles, it correctly displays the strm for each TV Show. When using the identical setup with Kodi 20 and prior versions, all movies and strms are displayed correctly. As you can see, I’m a newbie and my first post was in violation of the rules. Therefore, if more info is needed, please identify.