Assertion Failed: You need to pass a model name to the store's modelFor method

Pretty new to Ember so maybe someone can help me out. I keep running across this error and have no idea how to solve it.

Ember             : 2.5.1
Ember Data        : 2.5.3

Below is my router.js.

//app/router.js
import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('organization', {path: '/organization/:id'}, function(){
    this.route('about', { path: '/about' });
    this.route('admin', { path: '/admin' }, function(){
        this.route('team', { path: '/team/:team_id' });
    });
  });
});

The organization/:id/about and organization/:id/admin routes work fine. But when I try to load the organization/:id/admin/team/:team_id route, the error is thrown. Below is the routes/organization/admin/team.js file:

//app/routes/organization/admin/team.js
import Ember from 'ember';

export default Ember.Route.extend({

    model(params) {
        let organization = this.modelFor('organization');
        return organization.get('team');
    }

});

Not really sure what other information I should post, so please ask for any additional information you may think is necessary to help debug. My guess is it's something pretty simple and I'm completely oblivious to it.