Fatal error: Uncaught Error: Class "Doctrine\DBAL\Migrations\AbstractMigration" not found in /var/www/apache/dev/cal/web/src/DB/Migrations/Version20150809122309.php:11 Stack trace: #0 {main} thrown in /var/www/apache/dev/cal/web/src/DB/Migrations/Version20150809122309.php on line 11