Ionic Uncaught (in promise): invalid link

Question

I have probably a problem with this.nav.push in Ionic. I have done a login/registration page but when I login, I get this error message. I have to add some code in login.ts and e.g home.ts (which is the main page) ?

Runtime Error
Uncaught (in promise): invalid link: HomePage

---

Error: Uncaught (in promise): invalid link: HomePage at d (http://localhost:8100/build/polyfills.js:3:3991) at l (http://localhost:8100/build/polyfills.js:3:3244) at Object.reject (http://localhost:8100/build/polyfills.js:3:2600) at NavControllerBase._fireError (http://localhost:8100/build/main.js:45465:16) at NavControllerBase._failed (http://localhost:8100/build/main.js:45453:14) at http://localhost:8100/build/main.js:45508:59 at t.invoke (http://localhost:8100/build/polyfills.js:3:11562) at Object.onInvoke (http://localhost:8100/build/main.js:4622:37) at t.invoke (http://localhost:8100/build/polyfills.js:3:11502) at n.run (http://localhost:8100/build/polyfills.js:3:6468) at http://localhost:8100/build/polyfills.js:3:3767 at t.invokeTask (http://localhost:8100/build/polyfills.js:3:12256) at Object.onInvokeTask (http://localhost:8100/build/main.js:4613:37) at t.invokeTask (http://localhost:8100/build/polyfills.js:3:12177) at n.runTask (http://localhost:8100/build/polyfills.js:3:7153)

@edit: The problem occurs when I want login to my app. Here is the code to login.

login.ts

public login() {
    this.showLoading()
    this.auth.login(this.registerCredentials).subscribe(allowed => {
      if (allowed) {        
       this.nav.push('HomePage');
      } else {
        this.showError("Access Denied");
      }
    },
      error => {
        this.showError(error);
      });
    }

---

auth-service.ts ( here is public function which executes my login and where I have password and email which I need to type in login )

  public login(credentials) {
    if (credentials.email === null || credentials.password === null) {
      return Observable.throw("Please insert credentials");
    } else {
      return Observable.create(observer => {
        // At this point make a request to your backend to make a real check!
        let access = (credentials.password === "pass" && credentials.email === "email");
        this.currentUser = new User('Simon', '[email protected]');
        observer.next(access);
        observer.complete();
      });
    }
  }

I don't know why this code is wrong. My home page in my app is home.ts and class is HomePage

Answer 1

Turn out It work like a charm once you restart the server again, Took me hours to fix,If issue is not resolved by @IonicPage(), just restart your server. ie ionic serve. Happy coding!!!

Answer 2

what you need to do is to add @IonicPage() before '@Component' and import 'IonicPage' like this : import {NavController, IonicPage} from 'ionic-angular';

then you need to create a module for the homepage i.e in the home directory , create home.module.ts with the following contents

import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { HomePage } from './home';

@NgModule({
  declarations: [
    HomePage
  ],
  imports: [
    IonicPageModule.forChild(HomePage),
  ],
  exports: [
    HomePage
  ]
})
export class HomePageModule {}

and reload the project