Network link error

[3174992463]

• code

private void button1_Click(object sender, EventArgs e)
{
    AutoUpdater.DownloadPath = Application.StartupPath;
    AutoUpdater.ReportErrors = true;
    AutoUpdater.LetUserSelectRemindLater = false;
    AutoUpdater.RemindLaterTimeSpan = RemindLaterFormat.Days;
    AutoUpdater.RemindLaterAt = 2;
    AutoUpdater.OpenDownloadPage = true;
    AutoUpdater.Start("http://192.168.1.9:8888/Upgrade/config.xml");
    
}

• config.xml