Build Error for windows mobile app in ionic

I had installed following things for developing windows mobile app using ionic framework…

Now i had created sample app by following command in sequence

  1. ionic start myApp tabs
  2. cd myApp
  3. ionic platform add windows
  4. ionic build windows

first 3 step are executed without any error and windows platform is also added in myApp directory…

now i execute command “ionic build windows” without changing default code, it throws an error as below

Have any solution? Please suggest if you have…