A PHP Error was encountered

Severity: Warning

Message: Missing argument 1 for product::index()

Filename: controllers/Product.php

Line Number: 18

Backtrace:

File: /home/shomecom/public_html/application/controllers/Product.php
Line: 18
Function: _error_handler

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