Fatal error: Uncaught Error: Class "Symfony\Bundle\FrameworkBundle\CacheWarmer\AbstractPhpFileCacheWarmer" not found in /var/www/html/vendor/symfony/framework-bundle/CacheWarmer/ValidatorCacheWarmer.php:29 Stack trace: #0 {main} thrown in /var/www/html/vendor/symfony/framework-bundle/CacheWarmer/ValidatorCacheWarmer.php on line 29