title: Ember Error: Attempting to inject unknown injection: 'service:intl'
body: <p>I've upgraded my ember application and its dependencies from lower version to version 2.3.0 following the steps here <a href="https://github.com/ember-cli/ember-cli/releases/tag/v2.3.0-beta.1" rel="nofollow">https://github.com/ember-cli/ember-cli/releases/tag/v2.3.0-beta.1</a>. But while trying to run my application I'm getting an error.</p>
  
  <p>Error: Attempting to inject an unknown injection: <code>service:intl</code>
  at Object.Registry.validateInjections (ember.debug.js:2277).</p>
  
  <p>What possibly the cause of this error?</p>