I get a lot of errors of mixed content because my website is in HTTPS and the discourse subdomain too.
But the javascript embed code are trying to get HTTP links
Uncaught (in promise) no-response: no-response :: [{"url":"http://discourse.domain.com/images/discourse-logo-sketch.png"}]
at a.makeRequest (https://discourse.domain.com/javascripts/workbox/workbox-strategies.prod.js:1:2145)
_embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:6 Uncaught DOMException: Failed to execute 'postMessage' on 'Window': Invalid target origin '' in a call to 'postMessage'.
at u (https://discourse.domain.com/assets/embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:1:105)
at window.onload (https://discourse.domain.com/assets/embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:1:523)
u @ _embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:6
window.onload @ _embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:36
load (async)
(anonymous) @ _embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:25
(anonymous) @ _embed-application-590793ad7c35377ed13fcf562bc5faefeb2d67a33a71f1f98e420d6d94a31b4a.js:1