A PHP Error was encountered

Severity: Notice

Message: Undefined index: product_id

Filename: controllers/Brand_products.php

Line Number: 11

Backtrace:

File: /home/solarbaz/public_html/application/controllers/Brand_products.php
Line: 11
Function: _error_handler

File: /home/solarbaz/public_html/index.php
Line: 315
Function: require_once