Doesn't work NavController pop method in Ionic 3

I was built Ionic 3 application using following cli command.
```
$ ionic cordova start demo tabs -v3

And I opened one page with NavController push method in home page.
And I want to go back home page, so I click back button in navbar.
But I can't back to home page.
I was built Ionic 2 application before and it works fine, but I have updated the code, it doesn't work.
Who can solve this problem and help me?

Please share your code

Where did you find that command to start up a new project? That’s totally new to me.

home.html

...
<ion-content>
... ... ...
           <!--Username-->
          <div style="margin-top: 3%;">
            <strong><a href="#" (click)="gotoProfilePage(response.username)">ProfilePage</a></strong>
          </div>
 </ion-content>

home.ts

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';

import { ProfilePage } from '../profile/profile';

@IonicPage()
@Component({
  selector: 'page-feed',
  templateUrl: 'feed.html',
})
export class HomePage {

  constructor(public navCtrl: NavController, public navParams: NavParams) {
  }
  
  gotoProfilePage(username: string){
    this.navCtrl.push(ProfilePage, {username: username});
  }

}

profile.html

<ion-header>

  <ion-navbar color="black">
    <ion-title>Profile Page</ion-title>
  </ion-navbar>

</ion-header>

<ion-content padding>
   ... ... ...
</ion-content>

profile.ts

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';

@IonicPage()
@Component({
  selector: 'page-comments',
  templateUrl: 'comments.html',
})
export class ProfilePage {

  username: string;

  constructor(public navCtrl: NavController, public navParams: NavParams) {
    this.username = this.navParams.get('username');
  }

  ionViewDidLoad() {
    console.log('ionViewDidLoad ProfilePage');
  }
}

This is my code snippets.
When I click the button called “ProfilePage” in Home Page, I can navigate to Profile Page.
And I can see back button in navbar in Profile Page.
But when I click that back button in navbar, I can’t back to Home Page.
Once I used this code on Ionic 2, it works fine.
I updated Ionic CLI version from 2.0.0 to 3.0.0, it doesn’t work.

Check your console while clicking button to find the error. And post that error here, so then we can get an idea of your error.