Async Error when saving Google Adsense code in Blogger?

Async Error when pasting Google Adsense Code to Blogger:
This error is encountered when attempting to put Google Adsense Code to Blogger template.

Example Google Adsense Code:

<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<script>
(adsbygoogle = window.adsbygoogle || []).push({
google_ad_client: "ca-pub-XXXXXXXXXXXXXX",
enable_page_level_ads: true
});
</script>

Error Message Like:

"Attribute name "async" associated with an element type "script" must be followed by the ' = ' character."

Solution:

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