Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Migrations\AbstractMigration' not found in /home1/heyerarc/public_html/concrete/src/Updater/Migrations/AbstractMigration.php:17 Stack trace: #0 {main} thrown in /home1/heyerarc/public_html/concrete/src/Updater/Migrations/AbstractMigration.php on line 17