Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-03T21:45:24","request-id":"7a208217-67b2-4dc2-bb79-16ad02a025fe","client-request-id":"7a208217-67b2-4dc2-bb79-16ad02a025fe"}}}"