title: Chrome console - Uncaught (in promise) TypeError: this.engines is not iterable
body: <p>This error appears in chrome console when I load the app file on localhost:4200.
  I cannot figure out what does this point to. How do I find out the source of this error in my code?</p>
  <pre><code>Uncaught (in promise) TypeError: this.engines is not iterable
      at E.updateSocialMedia (content.js:48)
      at new E (content.js:48)
      at Function.start (content.js:48)
      at Function.main (content.js:48)
  </code></pre>
  <p><a href="https://i.stack.imgur.com/yy5mZ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/yy5mZ.png" alt="enter image description here" /></a></p>