Fatal error: Uncaught Error: Class 'Symfony\Bundle\FrameworkBundle\CacheWarmer\AbstractPhpFileCacheWarmer' not found in /var/www/api_backup/vendor/symfony/framework-bundle/CacheWarmer/SerializerCacheWarmer.php:28 Stack trace: #0 {main} thrown in /var/www/api_backup/vendor/symfony/framework-bundle/CacheWarmer/SerializerCacheWarmer.php on line 28