Fatal error: Uncaught EFramework\handle\EError: Cannot connect to `pc-rj9w88rc24icjwd6p.mysql.polardb.rds.aliyuncs.com` , using cfg with array ( 'host' => 'pc-rj9w88rc24icjwd6p.mysql.polardb.rds.aliyuncs.com', 'password' => 'MJHmjh784533', 'user' => 'cars', 'dbname' => 'botswana', '__id' => 0, ). More info :SQLSTATE[HY000] [2002] Connection refused; dsn : mysql:dbname=botswana;host=pc-rj9w88rc24icjwd6p.mysql.polardb.rds.aliyuncs.com;charset=utf8mb4; in /www/wwwroot/botswana/source/EFramework/database/PDOConnection.php:97 Stack trace: #0 /www/wwwroot/botswana/source/EFramework/database/PDOConnection.php(76): EFramework\database\PDOConnection->connect() #1 /www/wwwroot/botswana/source/EFramework/database/DBInstance.php(184): EFramework\database\PDOConnection->__construct() #2 /www/wwwroot/botswana/source/EFramework/database/DBInstance.php(132): EFramework\database\DBInstance->createConnection() #3 /www/wwwroot/botswana/source/EFramework/database/DB.php(54): EFramework\database\DBInstance->__construct() #4 /www/wwwroot/botswana/source/EFramework/log/Log.php(86): EFramework\database\DB::__callStatic() #5 /www/wwwroot/botswana/source/app/controller/ErrorController.php(57): EFramework\log\Log::debugInfo() #6 [internal function]: app\controller\ErrorController->handler() #7 /www/wwwroot/botswana/source/EFramework/app/ERoute.php(160): call_user_func_array() #8 /www/wwwroot/botswana/source/EFramework/app/ERoute.php(240): EFramework\app\ERoute->handle() #9 [internal function]: EFramework\app\ERoute->exceptionHandler() #10 {main} thrown in /www/wwwroot/botswana/source/EFramework/database/PDOConnection.php on line 97