Validating AMP page issue
<p>I am adding amp-html to our business website. I keep getting the error below,</p>

<pre><code>The mandatory text (CDATA) inside tag 'head &gt; style : boilerplate' is missing or incorrect.
</code></pre>

<p>I am following <a href="https://www.ampproject.org/docs/reference/spec.html#required-markup" rel="nofollow noreferrer">https://www.ampproject.org/docs/reference/spec.html#required-markup</a> but I can't seem to find this last issue in the page can someone tell me what I am missing? </p>

<p>This is the link I am testing it with right now <a href="http://purencool.com.au/brand-derived-from-who-you-are/amp#development=1" rel="nofollow noreferrer">http://purencool.com.au/brand-derived-from-who-you-are/amp#development=1</a> and the attached image is the error that is showing</p>

<p><a href="https://i.stack.imgur.com/GNFSQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GNFSQ.png" alt="enter image description here"></a></p>