Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:27 Stack trace: #0 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(27): PDO->__construct() #1 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(22): Doctrine\DBAL\Driver\PDOConnection->__construct() #2 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(362): Doctrine\DBAL\Driver\PDOMySql\Driver->connect() #3 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(428): Doctrine\DBAL\Connection->connect() #4 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(388): Doctrine\DBAL\Connection->getDatabasePlatformVersion() #5 /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(330): Doctrine\DBAL\Connection->detectDatabasePlatform() #6 /var/www/html/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php(795): Doctrine\DBAL\Connection->ge in /var/www/html/app/Resources/TwigBundle/views/Exception/error500.html.twig on line 28