Discussion on Assan - Multipurpose Theme + Admin + UI Kit

Previously I had a number of perfectly functioning YouTube videos in a Assan webpage that worked well in a browser.

The videos were embedded into the page using iframe, with code copied from Youtube -> Share -> embed.

Recently the YouTube video is shown as a black block with a failed warning in red.

I also tried adding the code from the template "hero-youtube-video.html" without success.

There seems no obvious reason for this that I can identify.

Any ideas how to resolve this would be most welcome.

Thank you.

Steven