title: cannot read property 'client_secret' of undefined
body: <p>I have tried to create a sample program using Node.js, following instructions from <a href="https://developers.google.com/google-apps/activity/v1/quickstart/nodejs" rel="noreferrer">https://developers.google.com/google-apps/activity/v1/quickstart/nodejs</a> </p>
  
  <p>I throws an error saying <strong>cannot read property 'client_secret' of undefined</strong> when trying to run it.</p>
  
  <p>Looking for your valuable suggestions.</p>
  
  <p>Thanks in advance.</p>