Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache/src/SymfonyCache/CustomTtlListener.php:26 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache/src/SymfonyCache/CustomTtlListener.php on line 26