The request cannot be completed because you have exceeded your quota.
No videos to be found - https://www.googleapis.com/youtube/v3/search?key=AIzaSyD8yUvArWaD1arpEFwNyP3nGbzF3937vXo&channelId=YTCENT&part=snippet&type=video&maxResults=20&order=date
Gallery example_youtube_videos does not seem to have any videos.