Execute http request using DevApp

Hi guys !
I have a simple question :
I’m currently creating an app and on a page, I use an ajax request in order to get information from a server.
When I’m working on my computer, everything is fine, but when I try to use my app with DevApp ( because I’ve seen ionic view doesn’t work anymore ) and I have a blank page in stead of the information I usually get back from the server…
Do you know why and how to solve it ?

thanks <3