Ionic4 beta :ionic serve resulting in white/blank page

I have installed Ionic4 beta and tried several starter projects. Each time ionic serve gives a blank (white) browser screen with no build or console errors. No edits have been made to the starter code

I found one solution here

But my app is in the path C:\Users\test\ionic_app\myApp. My node path C:\Program Files\nodejs .To which folder I will move myApp?

I got the solution.My default browser was Microsoft Edge. In that it was displayed as a blank page.I have changed chrome as default browser,then the home page loads in it.I don’t know why it is like that. If any one know the reason please share it.