A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Cart.php

Line Number: 55

Backtrace:

File: /usr/www/users/kidzpjbaar/application/controllers/Cart.php
Line: 55
Function: _error_handler

File: /usr/www/users/kidzpjbaar/index.php
Line: 320
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /usr/www/users/kidzpjbaar/system/core/Exceptions.php:272)

Filename: controllers/Cart.php

Line Number: 55

Backtrace:

File: /usr/www/users/kidzpjbaar/application/controllers/Cart.php
Line: 55
Function: header

File: /usr/www/users/kidzpjbaar/index.php
Line: 320
Function: require_once