$autoload['libraries'] = array(
    'form_validation',
    'database',
    'TanggalHelper',
    'session',
    'encryption'
);

<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Notice</p>
<p>Message:  Undefined property: Redirect_page::$nativesession</p>
<p>Filename: controllers/Redirect_page.php</p>
<p>Line Number: 154</p>


</div>
<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  Cannot modify header information - headers already sent by (output started at /home/pnpalugo/public_html/sipp/application/config/autoload.php:1)</p>
<p>Filename: core/Common.php</p>
<p>Line Number: 565</p>


</div>
<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>An uncaught Exception was encountered</h4>

<p>Type: Error</p>
<p>Message: Call to a member function set_flash_session() on null</p>
<p>Filename: /home/pnpalugo/public_html/sipp/application/controllers/Redirect_page.php</p>
<p>Line Number: 154</p>


</div>