Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-17T09:13:19","request-id":"8dde7b8f-0b01-400a-bf1e-8c1bbcc77438","client-request-id":"8dde7b8f-0b01-400a-bf1e-8c1bbcc77438"}}}"