Connection refused why?

my config.xml seems ok:

<content src="index.html"/>
  <plugin name="cordova-plugin-whitelist" spec="1" />
  <access origin="*" subdomains="true"/>
  <allow-intent href="*" />
  <allow-navigation href="*" />
  <preference name="webviewbounce" value="false"/>
  <preference name="UIWebViewBounce" value="false"/>
  <preference name="DisallowOverscroll" value="true"/>
  <preference name="android-minSdkVersion" value="16"/>
  <preference name="BackupWebStorage" value="none"/>
  <feature name="StatusBar">
    <param name="ios-package" value="CDVStatusBar" onload="true"/>
  </feature>

Up to now I dot not understand why of this problem, once I have setup correctly.