Playlist: bts vídeos

Error calling GET https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet%2CcontentDetails%2Cstatus&playlistId=PLZl47_01szNRzJYViB9gpQrEP3LQU2YRZ&maxResults=40&key=AIzaSyAGPm8upRTfZjkBpmzTl2DVkowQgNcKKv4: (403) The request is not properly authorized to retrieve the specified playlist.
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