Warning: PDO::__construct(): [2002] Connection refused (trying to connect via tcp://127.0.0.1:3306) in /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php on line 43

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] Connection refused' in /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:43
Stack trace:
#0 /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(43): PDO->__construct('mysql:host=127....', 'bjtclass', 'icGMrnS28R', Array)
#1 /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(45): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=127....', 'bjtclass', 'icGMrnS28R', Array)
#2 /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(360): Doctrine\DBAL\Driver\PDOMySql\Driver->connect(Array, 'bjtclass', 'icGMrnS28R', Array)
#3 /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(429): Doctrine\DBAL\Connection->connect()
#4 /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Conne in /www/wwwroot/bjtclass.cloud-focus.net/vendor2/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 103