Missing header and footer

Hello,
No doubt your plugin looks promising to me. But
It looks like the site misses the header and footer at http://mywebsite.com/advanced-search page.
All the header and footer html, CSS and JS code gets missing from the page code. Can you please fix the issue?
And it looks like this See this http://imgur.com/UobwquH

https://ww.wp.xz.cn/plugins/advanced-custom-post-search/