Authentication object is exist, but when accessing the property value returned undefined

Heloo, i’m new on ionic and angular.

i wanna ask something weird. i have authservice which have a authentication detail, included token and status islogin.

type or paste code here
constructor(public navCtrl: NavController, public navParams: NavParams, public modalCtrl:ModalController,public auth: AuthService) {
    
  }

  ionViewDidLoad() {
    console.log(this.auth)
    console.log(this.auth.loggedIn)
    if(this.auth.loggedIn){
      console.log(this.auth);
      this.navCtrl.push("TabsPage");
    }    
  }

when i call

console.log(this.auth)

the code returned authentication object with value

buth when i call

console.log(this.auth.loggedin)

it return undefined, when i expect return value is false

this auth.service.ts

import { Injectable, NgZone, Component } from '@angular/core';
import { Storage } from '@ionic/storage';

// Import AUTH_CONFIG, Auth0Cordova, and auth0.js
import { AUTH_CONFIG } from './auth.config';
import Auth0Cordova from '@auth0/cordova';
import * as auth0 from 'auth0-js';

@Injectable()
export class AuthService {
  Auth0 = new auth0.WebAuth(AUTH_CONFIG);
  Client = new Auth0Cordova(AUTH_CONFIG);
  accessToken: string;
  user: any;
  loggedIn: boolean;
  loading = true;

  constructor(
    public zone: NgZone,
    private storage: Storage
  ) {
    this.storage.get('profile').then(user => this.user = user);
    this.storage.get('access_token').then(token => this.accessToken = token);
    this.storage.get('expires_at').then(exp => {
      this.loggedIn = Date.now() < JSON.parse(exp);
      this.loading = false;
    });
    
  }

  login() {
    this.loading = true;
    const options = {
      scope: 'openid profile offline_access'
    };
    // Authorize login request with Auth0: open login page and get auth results
    this.Client.authorize(options, (err, authResult) => {
      if (err) {
        throw err;
      }
      // Set access token
      this.storage.set('access_token', authResult.accessToken);
      this.accessToken = authResult.accessToken;
      // Set access token expiration
      const expiresAt = JSON.stringify((authResult.expiresIn * 1000) + new Date().getTime());
      this.storage.set('expires_at', expiresAt);
      // Set logged in
      this.loading = false;
      this.loggedIn = true;
      // Fetch user's profile info
      this.Auth0.client.userInfo(this.accessToken, (err, profile) => {
        if (err) {
          throw err;
        }
        this.storage.set('profile', profile).then(val =>
          this.zone.run(() => this.user = profile)
        );
      });
    });
  }

  logout() {
    this.storage.remove('profile');
    this.storage.remove('access_token');
    this.storage.remove('expires_at');
    this.accessToken = null;
    this.user = null;
    this.loggedIn = false;
  }

  isLoggedIn() :boolean{
    return this.loggedIn;
  }
}

and this login.ts

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams, ModalController } from 'ionic-angular';
import { AuthService } from './../../services/auth.service';

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

  constructor(public navCtrl: NavController, public navParams: NavParams, public modalCtrl:ModalController,public auth: AuthService) {
    
  }

  ionViewDidLoad() {
    console.log(this.auth)
    console.log(this.auth.loggedIn)
    if(this.auth.loggedIn){
      console.log(this.auth);
      this.navCtrl.push("TabsPage");
    }    
  }

  verify()
  {
    this.navCtrl.push('VerifyPage')
  }

  signup()
  {
    this.navCtrl.push('SignupPage')
  }

  forgot(){
    let modal = this.modalCtrl.create('ForgotPage');
    modal.present();
  }

  skip(){
    this.navCtrl.push('TabsPage');
  }

  toLogin(){
    this.navCtrl.push("GLogin");
  }

}

thank’s

Case matters. loggedIn and loggedin are different properties.