Cannot access ‘LoginPageModule’ before initialization ionic 4

I’m trying to insert google login for my ionic 4 apps and i have a problem everytime i click login button it look like thishave a problem like this

Cannot access 'LoginPageModule' before initialization

and my code from login.page.ts look like this

import { Component, OnInit } from '@angular/core';
import { NavController } from '@ionic/angular';
import { GooglePlus } from '@ionic-native/google-plus';

@Component({
  selector: 'app-login',
  templateUrl: './login.page.html',
  styleUrls: ['./login.page.scss'],
})
export class LoginPage{

  displayName: any;
  email: any;
  familyName: any;
  givenName: any;
  userId: any;
  imageUrl: any;

  isLoggedIn:boolean = false;

  constructor(
    public navCtrl: NavController,
    public googlePlus: GooglePlus
  ) { }

  login() {
    this.googlePlus.login({})
      .then(res => {
        console.log(res);
        this.displayName = res.displayName;
        this.email = res.email;
        this.familyName = res.familyName;
        this.givenName = res.givenName;
        this.userId = res.userId;
        this.imageUrl = res.imageUrl;
        this.isLoggedIn = true;
      })
      .catch(err => console.error(err));
  }

  logout() {
    this.googlePlus.logout()
      .then(res => {
        console.log(res);
        this.displayName = "";
        this.email = "";
        this.familyName = "";
        this.givenName = "";
        this.userId = "";
        this.imageUrl = "";

        this.isLoggedIn = false;
      })
      .catch(err => console.error(err));
  }

  ngOnInit() {

  }

}

i’ve tried different approach but still get this error, anyone knows how to solve it?

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Source Url Cannot access ‘LoginPageModule’ before initialization ionic 4