Fatal error: Uncaught Error: Class "Doctrine\DBAL\Schema\Synchronizer\AbstractSchemaSynchronizer" not found in /home/alkhalaffamily/public_html/past_videos/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/SQLAzure/SQLAzureFederationsSynchronizer.php:27 Stack trace: #0 {main} thrown in /home/alkhalaffamily/public_html/past_videos/vendor/doctrine/dbal/lib/Doctrine/DBAL/Sharding/SQLAzure/SQLAzureFederationsSynchronizer.php on line 27