A PHP Error was encountered

Severity: Notice

Message: Undefined variable: product_id

Filename: controllers/Website.php

Line Number: 1769

Backtrace:

File: /home/mylord/public_html/application/controllers/Website.php
Line: 1769
Function: _error_handler

File: /home/mylord/public_html/index.php
Line: 317
Function: require_once