Javascript no longer works with source URL

After upgrading to version 2.0.0, Javascript no longer works with source URL, for example Google Adsense

Original:
```
</footer>
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
</body>
</html>
```

laravel-page-speed 2.0.0:
```
</footer><script async src=</body></html>
```

Tested with different browsers.