Fatal error: Uncaught Error: Interface "Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface" not found in /var/www/html/festival/vendor/symfony/doctrine-bridge/CacheWarmer/ProxyCacheWarmer.php:25 Stack trace: #0 {main} thrown in /var/www/html/festival/vendor/symfony/doctrine-bridge/CacheWarmer/ProxyCacheWarmer.php on line 25