I had also faced similar situation , in my case following 3 points needed to be changed :

1) Make sure your Sitecore License has JSS license included , you can check this from licenses

[![enter image description here][1]][1]
[![enter image description here][3]][3]

2) Make sure you have installed the JSS Server Components Sitecore package through installation wizard as per your Sitecore instance version from following link.
https://dev.sitecore.net/Downloads/Sitecore_JavaScript_Services.aspx

3) Make sure that when JSS setup command is executed and you are prompted to provide option , provide the app name of your jss app in Sitecore hostname , similarly Sitecore Service URL as shown below. Of course new IIS site binding and host entry is also required.
Also make sure no VPN or proxy is affecting your copying.



[![enter image description here][2]][2]



  [1]: https://i.sstatic.net/07LpS.png

  [3]: https://i.sstatic.net/ga3xF.png
  [2]: https://i.sstatic.net/Awaj6.png