A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: product/detail.php

Line Number: 145

Backtrace:

File: /home/prathamtradeline/public_html/application/views/frontend/product/detail.php
Line: 145
Function: _error_handler

File: /home/prathamtradeline/public_html/application/views/frontend/index.php
Line: 5
Function: view

File: /home/prathamtradeline/public_html/application/controllers/Product.php
Line: 180
Function: view

File: /home/prathamtradeline/public_html/index.php
Line: 316
Function: require_once