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=PLW0bdxB8mgdv3lSqkP17IeKW-WYZFxbeb&key=AIzaSyDfDDHWTqJ6iOcASL3wLcpTvPWjmC-NnVk&maxResults=50

Access Not Configured. YouTube Data API has not been used in project 710158092566 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/youtube.googleapis.com/overview?project=710158092566 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.