Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Exception\ConstraintViolationException' not found in /home/vtsnised/public_html/anketa2.0/vendor/doctrine/dbal/lib/Doctrine/DBAL/Exception/UniqueConstraintViolationException.php:10
Stack trace:
#0 {main}
thrown in /home/vtsnised/public_html/anketa2.0/vendor/doctrine/dbal/lib/Doctrine/DBAL/Exception/UniqueConstraintViolationException.php on line 10