Typed.js t.el is null

Question

I'm trying to use type.js but I'm getting an error saying TypeError: t.el is null.

Even after following guides on Google or videos on YouTube and doing it the exact same way, the error is still there..

This is the html's head:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="typed.js-master/typed.js-master/lib/typed.min.js"></script>
<script src="general-behavior.js"></script>

The html's body:

<span class="typed"></span>

And the JavaScript code:

var typed = new Typed(".typed", {
  strings: [
  'Some <i>strings</i> with',
  'Some <strong>HTML</strong>',
  'Chars &times; &copy;'
  ],
});