title: Error at login page after changing application environment in codeigniter
body: <p>Sorry to all, I have a problem at login page in codeigniter after changing application environment from development to production. </p>
  
  <p>Previously it was working fine but now the login page fail at all. Here is the screenshot.</p>
  
  <p><a href="https://i.stack.imgur.com/PiIu9.png" rel="nofollow noreferrer">click here to see a screenshot</a></p>
  
  <p>The followings are the versions of PHP, APACHE and CI version.
  Windows Version:  Pro  64-bit, 
  XAMPP Version: 7.1.7, 
  Control Panel Version: 3.2.2,<br>
  CI version 3.1.7</p>
  
  <p>Please anybody with help.</p>