title: session in codeigniter Undefined property: CI::$session
body: <p>I'm having trouble loading my view on my login page . Having problems with the session here . I have a helper class that $ key security is part of it . But I think it is to do a session as an error saying .</p>
  
  <p>I thought I had prepared a num lines was not sure whether also that it may cause.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true">
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  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;?php $this-&gt;load-&gt;library('session');
        if(!$this-&gt;session-&gt;user_email)
        { ?&gt;
              &lt;li &lt;?php echo ($controller=="login" )? "class='active'": ""?&gt;&gt;
              &lt;a href="&lt;?php echo base_url('login') ?&gt;"&gt;
               Login
              &lt;/a&gt;
              &lt;/li&gt;
              &lt;?php } else { ?&gt;
              &lt;li&gt;
                  &lt;a href="&lt;?php echo base_url('login/logout') ?&gt;"&gt;
                      Logout
                  &lt;/a&gt;
              &lt;/li&gt;
  &lt;?php } ?&gt;</code></pre>
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  </p>
  
  <p>this problem </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>Error was encountered
  
  Severity: Notice
  
  Message: Undefined property: CI_Loader::$session
  
  Filename: views/header.php
  
  Line Number: 145
  
  Backtrace:</code></pre>
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  </p>