A PHP Error was encountered

Severity: Notice

Message: Undefined variable: topic_title

Filename: views/topic_index_vi.php

Line Number: 6

Backtrace:

File: /virtual/htdocs/ikou_www/application/views/topic_index_vi.php
Line: 6
Function: _error_handler

File: /virtual/htdocs/ikou_www/application/controllers/Topics.php
Line: 41
Function: view

File: /virtual/htdocs/ikou_www/index.php
Line: 315
Function: require_once