Fatal error: Uncaught Error: Class 'FOS\HttpCacheBundle\EventListener\AbstractRuleListener' not found in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache-bundle/src/EventListener/InvalidationListener.php:36 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache-bundle/src/EventListener/InvalidationListener.php on line 36