ResponseStatusLine protocol violation

[Almircar]

Best regards, Sorry for the inconvenience, could you tell me which option I have to enable so that the responses of my api with Autowrapper do not show: ResponseStatusLine protocol violation. I am making the request from a RestClient. when disabling the autowrapper in the api, it doesn't give me an error. Example of the request:

     var client = new RestClient("http://localhost:2525/Api/Cart/Customer/GetCountries");
     client.Timeout = -1;
     var request = new RestRequest(Method.GET);

      request.AddHeader("Content-Type", "application/json");
        RestResponse response = client.Execute(request);
        Console.WriteLine(response.Content);

Method configuration in api: [AllowAnonymous] [ProducesResponseType(typeof(List'<'CountriesDto'>'), Status200OK)] [ProducesResponseType(typeof(ApiResponse), Status400BadRequest)] [HttpGet("GetCountries")] public async Task GetCountries() { var response = new ApiResponse();
response.Result = await _userAccessModule.ExecuteQueryAsync(new GetCountriesQuery()); return response; }

It should be simple, but I don't know how to do it.

Thanks in advance