gnome-books-40.0 does not find any books/documents
gnome-books-40.0 does not find any books/documents.
There a message stating that no books were found in ~/Documents together with a link, which opens in ~/Documents - when I double-click on one of the pdf files there, it opens in evince-40.1
ps-aux shows various tracker3 miners running and other apps using tracker3, such as gnome-music, find and open files.
Running gnome-books from a terminal prompt does not give any error or warning messages at all.