Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Exception\ConstraintViolationException' not found in C:\Landaweb\webs\landaweb\backend\vendor\doctrine\dbal\lib\Doctrine\DBAL\Exception\NotNullConstraintViolationException.php:30 Stack trace: #0 {main} thrown in C:\Landaweb\webs\landaweb\backend\vendor\doctrine\dbal\lib\Doctrine\DBAL\Exception\NotNullConstraintViolationException.php on line 30