APach

Update from v6.8.74 to v6.8.75 the same error, but when 6.8.74 freshly installed and updated right after no error. Yes database named 'groupoffice' exist. In config.php i add `$config['register_visible_user_groups'] =...

Ok, I found it. How to reproduce. Install the previous release, do basic config. From the admin interface, "System settings -> Modules" disable & delete "Start page" Then "apt upgrade"...