saguaros Thank you so much, saguaros, for the update and for all what you are doing to help me. I didn't realize I had selected the category Flat Earth (PDF Articles). I thought I had selected Health (PDF Articles), which has the access set as Public. I have fixed that, and now that menu item is pointing at health articles. I see it's working now with no error messages, but what was the cause of the problem? It can't be the access selection because on my real website (the one I shared with you is just a "short" version of the real one), there is a login module and registered people see that error message. Is that because of the PHP version? Do I need to set it to 7.X instead of 8.X? Please, advise. Thanks again for your precious help, saguaros.
