AMP version doesn't have script for the amp-youtube component

I have problem with AMP pages where I use video from Youtube.

The problem is that there is a line of code missing from the AMP pages:
<script async custom-element="amp-youtube" src=""></script>
Help here Example: <amp-youtube> -

I can’t add this via code injection because injection doesn’t work for AMP versions of pages.

For example and test’s result