A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Welcome.php

Line Number: 608

Backtrace:

File: /home/ennashim/public_html/en/application/controllers/Welcome.php
Line: 608
Function: _error_handler

File: /home/ennashim/public_html/en/index.php
Line: 327
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/ennashim/public_html/en/system/core/Exceptions.php:271)

Filename: controllers/Welcome.php

Line Number: 608

Backtrace:

File: /home/ennashim/public_html/en/application/controllers/Welcome.php
Line: 608
Function: header

File: /home/ennashim/public_html/en/index.php
Line: 327
Function: require_once