That looks like a mixed content issue, do a search for that here or elsewhere and you will probably find a lot of results!
Mixed content errors mean that your website is being loaded over HTTPS but some of the resources are being loaded over HTTP. To fix this you will need to edit your source code and change all resources to load over a relative path, or directly over HTTPS.
For example, if you load your images with a full URL:
<img src="http://example.com/image.jpg" />
You would want to change this to:
<img src="//example.com/image.jpg" />
By removing the
See this Community Tip for further details