Hi,
On Tue, 12 Jan 2021 14:25:02 -0800, castania pilonga wrote:
> I uploaded the built files to my remote web server and published them,
> just to check if publishing it from a real webserver could fix it, but
> it still shows the same error.
This might as well be a client-side error, not a sphinx one, but it's a
shot in the dark.
There is another extension to embed videos, that I would like to use but
I had no time yet to test it, perhaps you can give it a try:
https://github.com/sphinx-contrib/video
HTH,
Stefano