Connection refused

FILE: /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Db.class.php 　LINE: 162

[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Db.class.php (162) DbMysqli->connect()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Driver/Db/DbMysqli.class.php (81) Db->initConnect()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Driver/Db/DbMysqli.class.php (209) DbMysqli->query(SHOW COLUMNS FROM `dict_category`)
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (135) DbMysqli->getFields(`dict_category`)
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (123) Model->flush()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (1174) Model->_checkTableInfo()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Model.class.php (98) Model->db(0, )
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/Dict/Lib/Action/IndexAction.class.php (165) Model->__construct()
[25-07-28 15:09:07] () IndexAction->dict()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/App.class.php (171) ReflectionMethod->invoke()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/App.class.php (207) App::exec()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Lib/Core/Think.class.php (39) App::run()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Common/runtime.php (245) Think::start()
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/ThinkPHP.php (33) require(/fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/Common/runtime.php)
[25-07-28 15:09:07] /fdisk1/wwwroot/fy.tingclass.net/index.php (26) require(/fdisk1/wwwroot/fy.tingclass.net/ThinkPHP/ThinkPHP.php)