A PHP Error was encountered

Severity: Notice

Message: Undefined variable: sum

Filename: views/cart.php

Line Number: 161

Backtrace:

File: /var/www/avonflex.com/application/views/cart.php
Line: 161
Function: _error_handler

File: /var/www/avonflex.com/application/controllers/Welcome.php
Line: 189
Function: view

File: /var/www/avonflex.com/index.php
Line: 315
Function: require_once