Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Exception\ConstraintViolationException' not found in /var/www/html/tollinventory.api.cssindiaonline.com/public_html/vendor/doctrine/dbal/src/Exception/NotNullConstraintViolationException.php:10 Stack trace: #0 {main} thrown in /var/www/html/tollinventory.api.cssindiaonline.com/public_html/vendor/doctrine/dbal/src/Exception/NotNullConstraintViolationException.php on line 10