( ! ) Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Exception\ConstraintViolationException' not found in /var/www/html/invoice/vendor/doctrine/dbal/lib/Doctrine/DBAL/Exception/UniqueConstraintViolationException.php on line 10
( ! ) Error: Class 'Doctrine\DBAL\Exception\ConstraintViolationException' not found in /var/www/html/invoice/vendor/doctrine/dbal/lib/Doctrine/DBAL/Exception/UniqueConstraintViolationException.php on line 10
Call Stack
#	Time	Memory	Function	Location
1	0.0001	397000	{main}( )	.../UniqueConstraintViolationException.php:0