Hi Ivo,
After upgrading to Joomla 4, all navigation modules cause error 500. If I deactivate the menu modules (sidebar-right), the error is gone and the page can be loaded. But I need the menu modules. I wonder where the error could be. ??
Here is a link to the new page:
https://j4.jugendhilfe-unterland.de/index.php. and also to the old
https://jugendhilfe-unterland.de/index.php one where the display is visible. See the List bellow.
Thanks for Your help.
Regards
Thomas