templateUrl does not work for me

Question

I use the seed structure as per angular.io get started project. Everything OK so far.

Now I wanted to change the top component to have a view from a separated file a

Answer 1

In my case i resolved this issue by adding moduleid property of component

@Component({
    moduleId: module.id,
    selector: 'my-app',
    // templateUrl: './app/app.component.html'
    templateUrl:'app.component.html'
})

and it works as expected. And i get some idea from this url :
https://www.youtube.com/watch?v=WAPQF_GA7Qg&feature=youtu.be