https://www.r-bloggers.com/deploying-desktop-apps-with-r

I followed this guide and my guess is that I need a sample app.R, ui.R, and/or server.R in order to run it. I tried a some from Shiny gallery (here is an example) and the Chrome browser would get stuck on loading. The log ShinyAppMsg.log would show the following:

library paths:
... PATH/test/R-Portable/App/R- 
Portable/library
Loading required package: shiny
Loading required package: methods

Listening on http://127.0.0.1:3067
Browser path: PATH/test/GoogleChromePortable/App/Chrome-bin/chrome.exe

If I close Chrome, the log would append "ERROR: [on_request_read] connection reset by peer" and if I close the console, Chrome would show "server refused to connect" and ^C would show in the console.

Am I missing something?