Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-18T16:24:59","request-id":"80816506-2cb9-457b-a7b4-d53ee1b1e361","client-request-id":"80816506-2cb9-457b-a7b4-d53ee1b1e361"}}}"