火狐浏览器能用 谷歌出现This request has been blocked； the content must be served over HTTPS解决方法

方法一：在页面添加（本人没成功）

方法二：在nginx配置响应头（add_header Content-Security-Policy upgrade-insecure-requests;）如下：

server {
    ...
    location / {
        ...
        add_header Content-Security-Policy upgrade-insecure-requests;
        ...
    }
}