Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-14T06:40:48","request-id":"d20e462e-6c95-4497-b7fe-b8762d117fe0","client-request-id":"d20e462e-6c95-4497-b7fe-b8762d117fe0"}}}"