Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection timed out in /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php:624 Stack trace: #0 /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php(624): PDO->__construct('mysql:host=172....', 'wx', 'CKtjDBLZR3fbksK...', Array) #1 /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php(600): think\db\Connection->createPdo('mysql:host=172....', 'wx', 'CKtjDBLZR3fbksK...', Array) #2 /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php(1768): think\db\Connection->connect() #3 /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php(747): think\db\Connection->initConnect(false) #4 /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/connector/Mysql.php(66): think\db\Connection->getPDOStatement('SHOW FULL COLUM...') #5 /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php(449): think\db\connector\Mysql->getFields('`system_domain`') #6 /www/wwwroot/6ui1r7.cn/vendor/t in /www/wwwroot/6ui1r7.cn/vendor/topthink/think-orm/src/db/Connection.php on line 624