title: Iframe - 500 internal server error in live site
body: <p>I have used iframe in my local machine. It works fine.
  But when I use it in my live server, it shows 500 Internal server error.</p>
  
  <p>My local machine is windows OS.
  Live machine is Linux.</p>
  
  <p>If somebody issue like this, pls guide me</p>