The request cannot be completed because you have exceeded your quota.
Original request - https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&type=video&videoEmbeddable=true&playlistId=PLR4rza1te3D7kjF06CO8vGLg7nLtriFkH&key=AIzaSyD8yUvArWaD1arpEFwNyP3nGbzF3937vXo&maxResults=20&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=PLR4rza1te3D7kjF06CO8vGLg7nLtriFkH&key=AIzaSyD8yUvArWaD1arpEFwNyP3nGbzF3937vXo&maxResults=20&order=date
The request cannot be completed because you have exceeded your quota.
Gallery juntos-vamos-por-mas-3 does not seem to have any videos.