Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://gensokyoradio.net:8000/1/. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). I have already set "security.fileuri.strict_origin_policy" to false I have already opened "http://gensokyoradio.net:8000/1/" in another tab, but Firefox did not ask me to add a certificate. This may be helpful, a warning that appeared before the one above: "Loading mixed (insecure) display content “http://gensokyoradio.net:8000/1/” on a secure page"