Unable to run project after migration from ionic v2 to ionic v3

Hello,

I face some issue after the migration of project to ionic v3. In fact I followed the tutorial below to carry out the migration.

After I run my project ionic serve --lab but it doesn't work, I have this error

Capture d’écran 2017-06-22 à 07.21.13.png1808x354 66.2 KB

I have this message, yet the package exists in the node_module directory

Capture d’écran 2017-06-22 à 07.26.08.png582x990 37.3 KB

And in the console of my browser I can see that there is apparently a worry with an abstract class. Here is the code of the abstract class in question.

import {Injectable} from "@angular/core";
import {GlobalsConstants} from "../constants/globals.constants";
import {NavController, NavParams} from "ionic-angular";

@Injectable()
export abstract class AbstractLoggedPage {

  protected logged: boolean;
  protected loggedUser;
  protected nav;
  protected navParams;


  constructor(navCtrl?: NavController, navParams?: NavParams) {
    this.nav = navCtrl;
    this.navParams = navParams;
    this.loggedUser = JSON.parse(localStorage.getItem(GlobalsConstants.USER_LOGGED));
  }

  static checkLogin(): boolean {
    return !!localStorage.getItem("logged");
  }

  ionViewCanEnter(): boolean{
    if(AbstractLoggedPage.checkLogin()){
      this.initData();
      return true;
    } else {
      return false;
    }
  }

  abstract initData();

}

Can anyone help me understand what is wrong ?