Requests from referer  are blocked.
Original request - https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&type=video&videoEmbeddable=true&playlistId=PLYKy4VbxNln4-TnPBLopXSrJbydu7kkhv&key=AIzaSyAq8DAFAh-Eqa_Ni5iDie7cd6m5PwYZoE0&maxResults=50&order=date
Requests from referer  are blocked.
Original request - https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&type=video&videoEmbeddable=true&playlistId=PLYKy4VbxNln4-TnPBLopXSrJbydu7kkhv&key=AIzaSyAq8DAFAh-Eqa_Ni5iDie7cd6m5PwYZoE0&maxResults=50&order=date
No youtube playlist videos to be found - maybe API key not set ? This is the feed - https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&type=video&videoEmbeddable=true&playlistId=PLYKy4VbxNln4-TnPBLopXSrJbydu7kkhv&key=AIzaSyAq8DAFAh-Eqa_Ni5iDie7cd6m5PwYZoE0&maxResults=50&order=date
Requests from referer are blocked.
Gallery learn-about-cancer does not seem to have any videos.