我有
<iframe src="https://path/to/site" width="300" />
我现有的网站也在https上。
但我得到了错误
Mixed Content: The page at 'https://path/to/site' was loaded over HTTPS, but requested an insecure resource 'http://path/to/site'. This request has been blocked; the content must be served over HTTPS.
但是src在iframe中有https。
如何解决这个问题？