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&playlistId=K6CFF5XENOmeKZ4LtrU9CuUyHqsMc9Dl&key=AIzaSyCy6mD4t2hCyGfC7NvDP-fliEDgl0g51jk&maxResults=50