Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-28T15:26:09","request-id":"35875e9c-275f-421d-86e6-798e1e6126a0","client-request-id":"35875e9c-275f-421d-86e6-798e1e6126a0"}}}"