A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "category_id" on null

Filename: frontend/category.php

Line Number: 40

Backtrace:

File: /home6/passeng1/public_html/application/views/frontend/category.php
Line: 40
Function: _error_handler

File: /home6/passeng1/public_html/application/controllers/Mainframe_front.php
Line: 143
Function: view

File: /home6/passeng1/public_html/index.php
Line: 315
Function: require_once