setNav to tutorial page after logout is pressed on conference app

I have been modifying the conference app to learn ionic 3 and am having trouble with the logout button the side menu and it’s actions.

When a user presses logout I want them to be logged out and redirected to the tutorial again, but nothing I have tried works:

openPage(page: PageInterface) {
    let params = {};

    // the nav component was found using @ViewChild(Nav)
    // setRoot on the nav to remove previous pages and only have this page
    // we wouldn't want the back button to show in this scenario
    if (page.index) {
      params = { tabIndex: page.index };
    }

    // If we are already on tabs just change the selected tab
    // don't setRoot again, this maintains the history stack of the
    // tabs even if changing them from the menu
    if (this.nav.getActiveChildNav() && page.index != undefined) {
      this.nav.getActiveChildNav().select(page.index);
    // Set the root of the nav with params if it's a tab index
  } else {
      this.nav.setRoot(page.name, params).catch((err: any) => {
        console.log(`Didn't set nav root: ${err}`);
      });
    }

    if (page.logsOut === true) {
      // Give the menu time to close before changing to logged out
      this.userData.logout();

      //these are the 3 attempts i've made below, all of which don't work
      //this.nav.setRoot(TutorialPage);
      //this.nav.setRoot('Tutorial');
      //this.openTutorial();


    }
  }

The error I get when trying all 3 of these attempts is:

Didn't set nav root: invalid link: TutorialPage

Any insight as to what I’m doing wrong? Should be having logout button call a different function entirely somehow?

Thank you

I don’t like interacting with the navigation system more than I have to, so here’s how I handle login/logout.