title: How do I fix gulpfile.js to avoid "Did you forget to signal async completion?" when running "gulp ngrok-serve" and DO NOT have the task defined?
body: <p>I used 2 tutorial clips from Microsoft (<a href="https://www.youtube.com/watch?v=S61Mr4WEgzM" rel="nofollow noreferrer">first</a>, <a href="https://www.youtube.com/watch?v=y1_F1X95d_U" rel="nofollow noreferrer">second</a>) to build a sample Teams Message Extension.</p>
  <p>I'm down to the final step of really starting the app with the <code>gulp ngrok-serve</code> command, but I get this error message:</p>
  <pre><code>...
  [16:05:29] Watching .env
  [16:05:29] The following tasks did not complete: ngrok-serve, serve, watch
  [16:05:29] Did you forget to signal async completion?
  </code></pre>
  <p>I've read various suggestions on how to fix this, but <strong>the problem in my case</strong> is that I don't have the &quot;ngrok-serve&quot; task defined in my file. It seems to be running a &quot;<em>default</em>&quot; version of it.</p>
  <p>So how should I define/overwrite it, so that I can fix it's implementation, in my <code>gulpfile.js</code> file ?</p>
  <p>Thank you.</p>