uploading file on server and keep getting an error

I’m trying to upload binary data onto server but unity keeps giving me error “could not connect to destination host”

below is my co-routine code:

private IEnumerator UploadAssets()
    {
        yield return new WaitForSeconds(5);
        Debug.LogError("starting now");

        string baseURL = "http://config2.gamesparks.net/restv2/game/{myapikey}/config/~downloadables/testingfile/file";
        //string encodedURL = WWW.EscapeURL(baseURL);

        byte[] bytes = File.ReadAllBytes("D:\	estingfile.txt");

        WWWForm form = new WWWForm();
        form.AddField("downloadableId", "testingfile");
        form.AddField("apiKey", "{myapikey}");
        form.AddBinaryData("formData", bytes, "D:\	estingfile.txt", "text/plain");

        using (UnityWebRequest www = UnityWebRequest.Post(baseURL, form))
        {
            www.SetRequestHeader("Authorization", "{myusername/password}");
            www.SetRequestHeader("Accept", "application/json");
            yield return www.SendWebRequest();

            Debug.LogError(www.responseCode);
            Debug.LogError(www.GetResponseHeader("shortCode"));

            if (www.isNetworkError || www.isHttpError)
            {
                Debug.Log(www.error);
            }
            else
            {
                Debug.Log("Form upload complete!");
            }

            Debug.LogError("out");
       }
    }

Resolved issue myself.