Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-12T05:05:04","request-id":"ef331629-9625-452c-916c-30aacfffb3b4","client-request-id":"ef331629-9625-452c-916c-30aacfffb3b4"}}}"