Fatal error: Uncaught Error: Class 'Doctrine\Migrations\AbstractMigration' not found in /var/www/html/navirre.com/htdocs/concrete/src/Updater/Migrations/AbstractMigration.php:20 Stack trace: #0 {main} thrown in /var/www/html/navirre.com/htdocs/concrete/src/Updater/Migrations/AbstractMigration.php on line 20