Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-01-13T16:44:49","request-id":"0e99cb50-8d9f-40b9-a0d2-fa680f9abaa6","client-request-id":"0e99cb50-8d9f-40b9-a0d2-fa680f9abaa6"}}}"