Mixed Content：The page at <URL> was loaded over HTTPS,but requested an insecure XMLHttpRequest endpoint <URL>. This request has been blocked.the content must be serveed over HTTPS

在相应页面的head中加入一段代码即可：

<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">

参考：https://www.honmau.com/help/142.html