Ionic Login Error Static Injector Error

Ionic Framework ionic-v3
1

I am attempting to implement a login page for my ionic project, but am receiving the following error. Does anyone know what may be causing this?

50 AM
Screen Shot 2017-11-22 at 7.34.50 AM.png2338×718 83.6 KB

Below is my login.ts file as of now:


import { Component } from '@angular/core';
import { NavController, AlertController, LoadingController, Loading } from 'ionic-angular';
import { AuthService } from '../../providers/auth-service';

@Component({
  selector: 'page-login',
  templateUrl: 'login.html',
})
export class LoginPage {
  loading: Loading;
  registerCredentials = { email: '', password: '' };
 
  constructor(private nav: NavController, private auth: AuthService, private alertCtrl: AlertController, private loadingCtrl: LoadingController) { }
 
  public createAccount() {
    this.nav.push('RegisterPage');
  }
 
  public login() {
    this.showLoading()
    this.auth.login(this.registerCredentials).subscribe(allowed => {
      if (allowed) {        
        this.nav.setRoot('HomePage');
      } else {
        this.showError("Access Denied");
      }
    },
      error => {
        this.showError(error);
      });
  }
 
  showLoading() {
    this.loading = this.loadingCtrl.create({
      content: 'Please wait...',
      dismissOnPageChange: true
    });
    this.loading.present();
  }
 
  showError(text) {
    this.loading.dismiss();
 
    let alert = this.alertCtrl.create({
      title: 'Fail',
      subTitle: text,
      buttons: ['OK']
    });
    alert.present(prompt);
  }
}
2

The AuthService can not be found for Dependency injection. You should check if you added it to your providers in the app.module.ts, since you have not listed any providers in this component.