hbuidx下载插件或登录时，报网络错误，电脑网络无问题，浏览器可访问。而且怎么没有设置代理的地方呢

报错如下：还请大神解答
2020-07-10 17:07:05.363 [WARNING:] http request: QUrl("http://update.dcloud.net.cn/hbuilderx/alpha/win32/plugins/index.json?tmp=61625261") , connect to server error, errorCode: QNetworkReply::NetworkError(HostNotFoundError) , httpCode: 0 , httpReason: ""