errorInfo: mysqli::__construct(): (HY000/2002): ????????????????????????????

errorFile: IWEB_PATH/lib/db/driver/mysqli_class.php
errorLine: 29
errorCode: 2
errorTime: 2024-09-19 16:04:39
#0 IWEB_PATH/lib/db/driver/mysqli_class.php(29): mysqli->__construct(localhost,czkxsm_cn,czkxsm_cn,czkxsm_cn,3306)
#1 IWEB_PATH/lib/db/db_class.php(59): IMysqli->connect()
#2 IWEB_PATH/lib/db/db_class.php(144): IDB->rTarget()
#3 IWEB_PATH/lib/web/model/model_class.php(247): IDB->query(SELECT class_name FROM shop_plugin WHERE is_open = 1 ORDER BY sort asc limit 50000)
#4 IWEB_PATH/classes/plugin.php(32): IModel->query(is_open = 1,class_name,sort asc)
#5 IWEB_PATH/classes/plugin.php(211): plugin::init()
#6 IWEB_PATH/lib/core/interceptor_class.php(116): plugin::onCreateApp()
#7 IWEB_PATH/lib/core/application_class.php(93): IInterceptor::trigger(onCreateApp)
#8 IWEB_PATH/index.php(8): IApplication->run()