title: how to show errors instead of HTTP ERROR 500 in codeigniter
body: <p>My CI project doesnt show any error and it is only show HTTP ERROR 500.<br>
  I have searched already and done these:    </p>
  
  <pre><code>define('ENVIRONMENT', 'development');
  
      case 'development':
      error_reporting(E_ALL);
      ini_set('display_errors', 'On');
      ini_set("error_reporting","E_ALL &amp; ~E_NOTICE &amp; ~E_STRICT");
      break;
  </code></pre>
  
  <p>Also tested </p>
  
  <pre><code>ini_set('display_errors', 1);
  </code></pre>
  
  <p>But nothing changed.<br>
  Any help would be apriciated.</p>