Create first APP FIORI in WEB IDE error.

Hi guys

I'm abap studying FIORI.I have been working with WEB IDE Trial and I 'm following this step by step :

https://www.youtube.com/watch?v=6vFTpqHAhiE

my problem is: When i run the app is showed a blank screen and the app is not open.

Are there any configuration or other thing that i need to do to solve it?

thanks.