In head_include css:
Code:
<meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
Today I had a plugin which loaded an external image fail to serve it from a secure SSL source. Placing the above in head_include css resolved the issue. This will ensure no mixed content.
Source:
https://www.christforums.org/forum/e...tent#post38169
All the best,
William