Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-10-29T23:39:29","request-id":"b1a8821c-a7b3-4d0d-9fdc-de06ead4cb26","client-request-id":"b1a8821c-a7b3-4d0d-9fdc-de06ead4cb26"}}}"