A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 18

Filename: program/category_ko_v.php

Line Number: 6

Backtrace:

File: /home/kwce/www/html/application/views/front/program/category_ko_v.php
Line: 6
Function: _error_handler

File: /home/kwce/www/html/application/views/front/_layout/bw_sub_layout_v.php
Line: 16
Function: view

File: /home/kwce/www/html/application/core/FRONT_Controller.php
Line: 241
Function: view

File: /home/kwce/www/html/application/controllers/front/Program.php
Line: 396
Function: _bw_view

File: /home/kwce/www/html/index.php
Line: 317
Function: require_once