Problem with Dapp launching in browser


I have tried so may times the Dapp application for Fuji mountain and also for hello_aira. But the browser does not show anything in Dapp (Empty page).

Also I have executed a new version of robonomics and clearing its cache before launching it.

I think all Dapp applications are just down!!!

Can you help me?

In hello_aira I have done all the commands and got this:

And executed robonomics in my laptop and got nothing in browser