Cannot access channel ID, this is feed - https://www.googleapis.com/youtube/v3/search?q=UC3sDDxUrZU4bSUAie4AhcKg&key=AIzaSyALt0TRSQLn12_j_iUlSxXb40QgVOldmOs&type=channel&part=snippet

API key not valid. Please pass a valid API key.

No videos to be found - https://www.googleapis.com/youtube/v3/channels?key=AIzaSyALt0TRSQLn12_j_iUlSxXb40QgVOldmOs&id=UC3sDDxUrZU4bSUAie4AhcKg&part=snippet&maxResults=50