Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Driver\Middleware\AbstractDriverMiddleware' not found in /var/www/exam_ITR/vendor/doctrine/dbal/src/Portability/Driver.php:16 Stack trace: #0 {main} thrown in /var/www/exam_ITR/vendor/doctrine/dbal/src/Portability/Driver.php on line 16