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=PLN6S-Flaz-RZ76YQ-KcyQtVqTFFdwefF-&key=AIzaSyD8yUvArWaD1arpEFwNyP3nGbzF3937vXo&maxResults=50&order=date

The request cannot be completed because you have exceeded your quota.