Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Connection' not found in /home/kingelearn/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Portability/Connection.php:19 Stack trace: #0 {main} thrown in /home/kingelearn/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Portability/Connection.php on line 19