Sitemaps are blank

Hi, there appears to be another plugin (or your theme?) that is inserting blocks of code before each URL node in the loop:

<div class='code-block code-block-1' style='margin: 8px 0; clear: both;'>
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- Between Posts 14 -->
<ins class="adsbygoogle"
     style="display:inline-block;width:728px;height:90px"
     data-ad-client="ca-pub-9825499947954986"
     data-ad-slot="5415440021"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script></div>

This is invalid code for XML so the stylesheet fails. An error will show in Google Search Console too, I suppose…

It is repeating this same code block over and over again, including this <!-- Between Posts 14 --> comment. Do you recognize that from some plugin or theme modification?

And thank you for reporting the incompatibility 🙂