Hallo!
Da bin ich leider immer noch. Nachdem ich ein älteres Backup hochgeladen habe und die Seite immer noch nicht angezeigt wird, bin ich den Ratschlägen von Joomla gefolgt:
"If your Administrator interface is not working, edit the configuration.php file in the root folder of your Joomla website.
1. Change the permissions from 444 or -r--r--r-- (no one has permission to write to the file) to 644 or -rw-r--r-- (only the Owner has permission to write).
2. Inside the file, set $debug to true and $error_reporting to maximum.
3. Save the file.
With the changes made, reload the page that was causing the error. Now you should see a stack trace.
The first item in the stack trace indicates where the error was triggered. Sometimes that is enough to identify the faulty Extension. Sometimes the faulty Extension is farther down the stack trace. It may not mean much to you but the stack trace is invaluable to the experts who answer questions in the Joomla Forums."
Das Resultat war:
ERROR
mysqli object is not fully initialized
Error
in /customers/c/b/d/arthur-gordon-wolf.de/httpd.www/libraries/vendor/joomla/database/src/Mysqli/MysqliStatement.php (line 138)
in /customers/c/b/d/arthur-gordon-wolf.de/httpd.www/libraries/vendor/joomla/database/src/Mysqli/MysqliStatement.php -> prepare (line 138)
in /customers/c/b/d/arthur-gordon-wolf.de/httpd.www/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php -> __construct (line 1020)
in /customers/c/b/d/arthur-gordon-wolf.de/httpd.www/libraries/vendor/joomla/database/src/DatabaseDriver.php -> prepareStatement (line 1785)
DatabaseDriver->setQuery(object(MysqliQuery)) in /customers/c/b/d/arthur-gordon-wolf.de/httpd.www/libraries/src/Menu/SiteMenu.php (line 166)
Der Fehler liegt demnach also im Mysqli-Bereich.
Was kann ich tun, um den Fehler zu beseitigen?
Besten Dank im Voraus!!!