Fatal error: Uncaught Error: Interface 'Knp\Menu\Factory\ExtensionInterface' not found in /home/eberhardschwarze/public_html/vendor/knplabs/knp-menu/src/Knp/Menu/Factory/CoreExtension.php:10 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/knplabs/knp-menu/src/Knp/Menu/Factory/CoreExtension.php on line 10