Fatal error: Uncaught Error: Interface "Symfony\Component\HttpKernel\HttpCache\ResponseCacheStrategyInterface" not found in /users/danielstruebig/www/familyhelper/vendor/symfony/http-kernel/HttpCache/ResponseCacheStrategy.php:25 Stack trace: #0 {main} thrown in /users/danielstruebig/www/familyhelper/vendor/symfony/http-kernel/HttpCache/ResponseCacheStrategy.php on line 25