Fatal error: Uncaught Error: Interface "Doctrine\Instantiator\InstantiatorInterface" not found in /var/www/html/festival/vendor/doctrine/instantiator/src/Doctrine/Instantiator/Instantiator.php:25 Stack trace: #0 {main} thrown in /var/www/html/festival/vendor/doctrine/instantiator/src/Doctrine/Instantiator/Instantiator.php on line 25