Fatal error: Uncaught Error: Class 'ContaoBootstrap\Navbar\Helper\AbstractItemHelper' not found in /home/eberhardschwarze/public_html/vendor/contao-bootstrap/navbar/src/Helper/DropdownItemHelper.php:22 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao-bootstrap/navbar/src/Helper/DropdownItemHelper.php on line 22