Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection refused in /Users/xiuyan/Sites/AIzhongzhuanzhan/src/Database.php:31 Stack trace: #0 /Users/xiuyan/Sites/AIzhongzhuanzhan/src/Database.php(31): PDO->__construct('mysql:host=127....', 'ai_gateway_user', Object(SensitiveParameterValue), Array) #1 /Users/xiuyan/Sites/AIzhongzhuanzhan/public/index.php(13): App\Database->__construct(Array) #2 {main} thrown in /Users/xiuyan/Sites/AIzhongzhuanzhan/src/Database.php on line 31