[NSFW] Playlist thumbnails don’t display

Hi,

I am trying to integrate a YoutTube playlist (https://youtube.com/playlist?list=PLHTS-bDZvlnY7zSvMXqRkdlOvhdBotX04) to my WordPress page via this plugin.
The principal video displays thumbnail just fine, but the other videos below it do not display anything.

Any ideas ? Thank you so much in advance ??

The page I need help with: https://astrakhan.fr/digitalleadership/astrapodcast-test/

Something on your site/server seems to be blocking the YouTube thumbnail images from loading. Inspect element shows the following:

Refused to load the image '<URL>' because it violates the following Content Security Policy directive: "img-src 'self' data: blob: filesystem: <URL> <URL> <URL> *.amazonaws.com *.google.com <URL> <URL> <URL> *.gravatar.com *.googleapis.com *.gstatic.com <URL> *.twitter.com *.twimg.com <URL> <URL> <URL> <URL>".

Hello?