A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "group_id" on null

Filename: layout/sidebar.php

Line Number: 28

Backtrace:

File: /home/cp004017/public_html/leave/application/views/layout/sidebar.php
Line: 28
Function: _error_handler

File: /home/cp004017/public_html/leave/application/views/layout/main.php
Line: 26
Function: view

File: /home/cp004017/public_html/leave/application/controllers/Error404.php
Line: 21
Function: view

File: /home/cp004017/public_html/leave/index.php
Line: 315
Function: require_once