Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection refused in /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Connection.php:723 Stack trace: #0 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Connection.php(723): PDO->__construct('mysql:host=127....', 'blcUsr', 'blC#p@ssD', NULL) #1 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Connection.php(638): yii\db\Connection->createPdoInstance() #2 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Connection.php(1063): yii\db\Connection->open() #3 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Connection.php(1050): yii\db\Connection->getMasterPdo() #4 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Command.php(261): yii\db\Connection->getSlavePdo() #5 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Command.php(1163): yii\db\Command->prepare(true) #6 /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Command.php(410): yii\db\Command->queryInternal('fetchAll', NULL) #7 /data/wwwroot/www.bee-link.cn/common/config/bootstrap.php in /data/wwwroot/www.bee-link.cn/vendor/yiisoft/yii2/db/Connection.php on line 649