Fatal error: Uncaught Error: Interface 'Knp\Menu\Provider\MenuProviderInterface' not found in /home/eberhardschwarze/public_html/vendor/knplabs/knp-menu-bundle/src/Provider/ContainerAwareProvider.php:8 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/knplabs/knp-menu-bundle/src/Provider/ContainerAwareProvider.php on line 8