Http500 Fatal Error

[1oid]

Hey,
 

I just uninstalled Prestashop 1.6.1 and manually upgraded to 1.7 on my webhosting service - upon installation I have found to have this error when turning on debugging:

 

Fatal error: Uncaught PDOException: SQLSTATE[28000] [1045] Access denied for user 'rigraffc_admin'@'localhost' (using password: YES) in /home/rigraffc/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:43 Stack trace: #0 /home/rigraffc/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(43): PDO->__construct('mysql:host=loca...', 'rigraffc_admin', 'PASSWORD', Array) #1 /home/rigraffc/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(44): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=loca...', 'rigraffc_admin', 'PASSWORD', Array) #2 /home/rigraffc/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(360): Doctrine\DBAL\Driver\PDOMySql\Driver->connect(Array, 'rigraffc_admin', PASSWORD', Array) #3 /home/rigraffc/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(942): Doctrine\DBAL\Connection->connect() #4 /home/rigraffc/public_html/src/PrestaShopBundle/Kernel/ModuleRepository.php(70): Doctrine\ in /home/rigraffc/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 103

Any ideas how to resolve this?