Fatal error: Uncaught Error: Class 'FOS\HttpCache\CacheInvalidator' not found in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache-bundle/src/CacheManager.php:24 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache-bundle/src/CacheManager.php on line 24