Show route on error anyway

I have route with next model:

model: function model(params) {
  this.store.unloadAll('comment');
  this.get('adapterContext').setRecipeId(params.recipe_id);
  return new _ember['default'].RSVP.hash({
    recipe: this.store.findRecord('recipe', params.recipe_id),
    comments: this.store.findAll('comment')
  });
}

In some cases request to /comments is failing. But I still want to show current route (just with some visual changes). Now I just get errors in console and transition to route failed. How can I change it?

UPD:

/comments returns 500 error from server. And in console I have got ember.debug.js:30877 Error: Adapter operation failed.