Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-05T06:05:35","request-id":"83f17652-cff0-4a5d-bb06-3d345edf9a16","client-request-id":"83f17652-cff0-4a5d-bb06-3d345edf9a16"}}}"