Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DataCollector\DataCollector" not found in /var/www/html/festival/vendor/symfony/doctrine-bridge/DataCollector/DoctrineDataCollector.php:30 Stack trace: #0 {main} thrown in /var/www/html/festival/vendor/symfony/doctrine-bridge/DataCollector/DoctrineDataCollector.php on line 30