error.txt

Error while loading route: TypeError: Cannot set property 'store' of undefined
    at Ember.Object.extend.modelFor (http://0.0.0.0:8000/js/app.js:64208:23)
    at Ember.Object.extend.recordForId (http://0.0.0.0:8000/js/app.js:63661:21)
    at deserializeRecordId (http://0.0.0.0:8000/js/app.js:64592:27)
    at http://0.0.0.0:8000/js/app.js:64570:11
    at http://0.0.0.0:8000/js/app.js:62913:20
    at http://0.0.0.0:8000/js/app.js:13556:16
    at Object.OrderedSet.forEach (http://0.0.0.0:8000/js/app.js:13399:10)
    at Object.Map.forEach (http://0.0.0.0:8000/js/app.js:13554:10)
    at Function.Model.reopenClass.eachRelationship (http://0.0.0.0:8000/js/app.js:62912:42)
    at normalizeRelationships (http://0.0.0.0:8000/js/app.js:64556:12) 

product.coffee

class App.Price extends DS.Model
  amount: DS.attr "number"
  currency: DS.attr "string"

class App.Product extends DS.Model
  name: DS.attr "string"
  sku: DS.attr "string"
  quantity: DS.attr "string"
  unit: DS.attr "number"
  price: DS.belongsTo App.Price, embedded: true