Fatal error: Uncaught Error: Class "Doctrine\DBAL\Exception\ConnectionException" not found in /home/oyaagyug/public_html/vendor/doctrine/dbal/src/Exception/ConnectionLost.php:8 Stack trace: #0 {main} thrown in /home/oyaagyug/public_html/vendor/doctrine/dbal/src/Exception/ConnectionLost.php on line 8