Calling Google Translator Service using C3 .net

I am using the below code for calling Google translator but getting an error.

using System; using System.Net; using System.Security.Authentication;

namespace ConsoleApp3 { class Program { static void Main(string[] args) { Console.WriteLine("Hello World!"); string input="Hello"; string languagePair="En/Fr";

        string url = String.Format("http://www.google.com/translate_t?hl=en&ie=UTF8&text={0}&langpair={1}", 
            input, languagePair);

        WebClient webClient = new WebClient();

        webClient.Encoding = System.Text.Encoding.UTF8;

        string result = webClient.DownloadString(url);

        result = result.Substring(result.IndexOf("id=result_box") + 22, 
        result.IndexOf("id=result_box") + 500);
        result = result.Substring(0, result.IndexOf("</div")); 

        Console.WriteLine(result);

        Console.ReadLine();

    }

}

}

Error : 'dotnet.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\2.1.6\System.Security.Claims.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled. 'dotnet.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\2.1.6\System.Resources.ResourceManager.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled. Exception thrown: 'System.Net.WebException' in System.Net.WebClient.dll An unhandled exception of type 'System.Net.WebException' occurred in System.Net.WebClient.dll The SSL connection could not be established, see inner exception. Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.

The program '[15956] dotnet.exe' has exited with code -1 (0xffffffff).