title: How to fix Warning: Application ID is not set?
body: <p>I always get the error 'Application ID is not set' in my log files while I have set this ID like they say in this <a href="https://github.com/alexa/skill-sample-nodejs-howto" rel="noreferrer">example</a>:</p>
  
  <pre><code>const APP_ID = 'amzn1.ask.skill.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx';
  </code></pre>
  
  <p>How can I fix this problem?</p>