Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-25T16:45:32","request-id":"0f2b21f2-ea8e-45a1-b124-318550a30a6a","client-request-id":"0f2b21f2-ea8e-45a1-b124-318550a30a6a"}}}"