Reports data not loading because "Blocked loading mixed active content"

[hadjiprocopis]

On Firefox 112, loading my tests page (e.g. here) fails. It displays "Data loading please wait ...." forever (under Selected Reports).

Browser console shows this message:

Blocked loading mixed active content “http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js”

Fix: replace all http:// instances with https:// for each loaded asset -- there could be other instances too.