unhandled Promise rejection: Failed to load | Learning Curve- Perfect Tutorial for the beginers

In the Following angular js code i m getting the below error

unhandled Promise rejection: Failed to load app.test.html ; Zone: ; Task: Promise.then ; Value: Failed to load app.test.html undefined

my code looks like below

import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: 'app.test.html'
})
export class AppComponent  { apptitle:string='Welcome to the world of angularjs Mr Vasanthan';appstatus:boolean=true; }

import { Component } from '@angular/core';

@Component({

selector: 'my-app',

templateUrl: 'app.test.html'

})

export class AppComponent { apptitle:string='Welcome to the world of angularjs Mr Vasanthan';appstatus:boolean=true; }

Solution:This issue because of wrong syntax. use templateUrl: ‘app/test.html’ instead of templateUrl: ‘app.test.html’.