A PHP Error was encountered

Severity: Notice

Message: Undefined index: title_th

Filename: main/download.php

Line Number: 23

Backtrace:

File: C:\xampp\htdocs\qa_main\application\views\main\download.php
Line: 23
Function: _error_handler

File: C:\xampp\htdocs\qa_main\application\libraries\Template.php
Line: 318
Function: view

File: C:\xampp\htdocs\qa_main\application\controllers\Main.php
Line: 135
Function: write_view

File: C:\xampp\htdocs\qa_main\index.php
Line: 289
Function: require_once