Fatal error: Uncaught Error: Interface 'ContaoBootstrap\Tab\View\Tab\ItemList' not found in /home/eberhardschwarze/public_html/vendor/contao-bootstrap/tab/src/View/Tab/Navigation.php:25 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao-bootstrap/tab/src/View/Tab/Navigation.php on line 25