A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_REFERER"

Filename: controllers/Main.php

Line Number: 16

Backtrace:

File: /home/central3/public_html/app/controllers/Main.php
Line: 16
Function: _error_handler

File: /home/central3/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/central3/public_html/system/core/Exceptions.php:272)

Filename: helpers/url_helper.php

Line Number: 562

Backtrace:

File: /home/central3/public_html/app/controllers/Main.php
Line: 16
Function: redirect

File: /home/central3/public_html/index.php
Line: 315
Function: require_once