title: "callback" argument must be a function Node.js
body: <p>I'm getting this error on "callback", this is the only part of the code where I use it. Thanks.</p>
  
  <pre><code>throw new TypeError('"callback" argument must be a function');
  </code></pre>
  
  <p>Error and code: <a href="https://pastebin.com/tbfdMdEK" rel="nofollow noreferrer">https://pastebin.com/tbfdMdEK</a></p>
  
  <p>Thank you!</p>