The server returned an invalid or unrecognized response error from Visual studio

This is weird coming from Microsoft. From visual studio when I execute my application code from Visual studio, most of the time I get that following error, I publish the code to my own server, the web application works fine (I don't get any error making the request) and from my pc (same pc where visual studio is) I make the same request into soapUI, I don't get any error from the server URL I'm calling. Why am I getting this error from Visual studio and I to fix this.

I can't provide the url for security reason.

System.AggregateException
  HResult=0x80131500
  Message=One or more errors occurred. (An error occurred while sending the request.)
  Source=System.Private.CoreLib
  Arborescence des appels de procédure :
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at Amadeus.Endpoint.call(String body) in C:\Users\Gervil Doubal\source\repos\Acompa chart\Amadeus\Endpoint.cs:line 175
   at Amadeus.EndpointGeneric`2.call() in C:\Users\Gervil Doubal\source\repos\Acompa chart\Amadeus\EndpointGeneric.cs:line 32
   at OnlineAgency.Controllers.CarController.userInfo() in C:\Users\Gervil Doubal\source\repos\Acompa chart\OnlineAgency\Controllers\CarController.cs:line 402
   at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionMethodAsync>d__12.MoveNext()

Exception interne 1 :
HttpRequestException : An error occurred while sending the request.

Exception interne 2 :
WinHttpException : Le serveur a renvoyé une réponse non valide ou non reconnue

InnerException:

{System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.Http.WinHttpException: Le serveur a renvoyé une réponse non valide ou non reconnue   
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Threading.Tasks.RendezvousAwaitable`1.GetResult()   at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext()   --- End of inner exception stack trace ---   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()   at System.Net.Http.DiagnosticsHandler.<SendAsync>d__2.MoveNext()--- End of stack trace from previous location where exception was thrown ---   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()   at System.Net.Http.HttpClient.<FinishSendAsyncBuffered>d__58.MoveNext()--- End of stack trace from previous location where exception was thrown ---   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()   at Amadeus.Endpoint.<_call>d__33.MoveNext() in C:\Users\Gervil Doubal\source\repos\Acompa chart\Amadeus\Endpoint.cs:line 131}

Message: An error occurred while sending the request.

Source: "System.Private.CoreLib"

Other InnerException:

{System.Net.Http.WinHttpException (0x80072F78): Le serveur a renvoyé une réponse non valide ou non reconnue (The server returned an invalid or unrecognized response)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Threading.Tasks.RendezvousAwaitable`1.GetResult()
   at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext()}

ErrorCode: -2147012744

NativeCodeError: 12152

Source: "System.Private.CoreLib"

StackTrace:

"   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Threading.Tasks.RendezvousAwaitable`1.GetResult()\r\n   at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext()"

The call function I remove some logical code that is not about http-client:

private async Task<String> _call(String body)
        {
            var client = new HttpClient();

            client.DefaultRequestHeaders.Clear();
            client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("text/xml"));
            client.DefaultRequestHeaders.Add("SoapAction", action + "/" + service);
            client.Timeout = TimeSpan.FromMinutes(3);

            StringContent httpContent = new StringContent(xml, Encoding.UTF8, "text/xml");

            HttpResponseMessage resp = await client.PostAsync(url + "/" + wSAP, httpContent);
            return await resp.Content.ReadAsStringAsync();
        }

the call is:

var resp = _call(body);
return resp.Result;