Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-02T21:08:33","request-id":"fb3f4afc-5434-49c0-aae0-8ec0022ad9c5","client-request-id":"fb3f4afc-5434-49c0-aae0-8ec0022ad9c5"}}}"