angular not redirecting route gurad code example

Example: angular guard redirect

@Injectable({
  providedIn: 'root'
})
export class AuthGuard implements CanActivate {
  constructor(private authService: AuthService, private router: Router) {}

  canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
    if (!this.authService.isLoggedIn) {
      return this.router.parseUrl('/notauthorized');
    } else {
      return true;
    }
  }
}