Did not pass parameters

controllers.application.js

import Controller from '@ember/controller';

export default Controller.extend({
});

controllers.two.js

import computed from '@ember/object';
import Controller from '@ember/controller';

export default Controller.extend({
  showPotato: computed(function() {
    return 'potato';
  })
});

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('two', { path: '/two/:id' }, function() {});
});

export default Router;

routes.two.js

import Ember from 'ember';

export default Ember.Route.extend({
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{link-to "Two" "two.index" 1}}

{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.1.4",
    "ember-template-compiler": "3.1.4",
    "ember-testing": "3.1.4"
  },
  "addons": {
    "ember-data": "3.1.2"
  }
}