every time I do I get debug mode starting getting this message
what is wrong?

<div class="ow_debug_body">

<div class="ow_debug_cap notice">OW Debug - Notice</div>

 <table>

 <tr>

 <td class="lbl">Message:</td>

 <td class="cnt">Undefined index: REQUEST_URI</td>

  </tr>

 <tr>

  <td class="lbl">File:</td>

 <td class="cnt">/home/admin/domains/highfive.tips/public_html/ow_core/ow.php</td>

  </tr>

  <tr>

 <td class="lbl">Line:</td>

  <td class="cnt">113</td>

       </tr>

                        </table>

        </div>

  </div>