Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

FILE: /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Db.class.php 　LINE: 163

[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Db.class.php (163) DbMysql->connect(Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2))
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Driver/Db/DbMysql.class.php (94) Db->initConnect()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Driver/Db/DbMysql.class.php (213) DbMysql->query()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Model.class.php (135) DbMysql->getFields(SHOW COLUMNS FROM `ic_sysdata`)
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Model.class.php (123) Model->flush(ic_sysdata)
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Model.class.php (1174) Model->_checkTableInfo()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Model.class.php (98) Model->db()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Common/common.php (270) Model->__construct(0, )
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Home/Lib/Action/CommonAction.class.php (82) D()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Home/Lib/Action/CommonAction.class.php (57) CommonAction->getConfig()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Action.class.php (57) CommonAction->_initialize(Sysdata)
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Home/Lib/Action/HomeAction.class.php (10) Action->__construct(exchange_list, exchange_conf)
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Home/Lib/Action/IndexAction.class.php (13) HomeAction->__construct()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Common/common.php (321) IndexAction->__construct()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/App.class.php (103) A()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/App.class.php (207) App::exec()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Lib/Core/Think.class.php (39) App::run()
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/Common/runtime.php (242) Think::start(Index)
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/Core/ThinkPHP.php (30) require(/home/wwwroot/lumenchip/public_html/Core/Common/runtime.php)
[20-01-28 06:58:01] /home/wwwroot/lumenchip/public_html/index.php (9) require(/home/wwwroot/lumenchip/public_html/Core/ThinkPHP.php)