A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Anasayfa.php

Line Number: 168

Backtrace:

File: /home/ankarabilimedu/public_html/departman/application/controllers/Anasayfa.php
Line: 168
Function: _error_handler

File: /home/ankarabilimedu/public_html/departman/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

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

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /home/ankarabilimedu/public_html/departman/application/controllers/Anasayfa.php
Line: 168
Function: redirect

File: /home/ankarabilimedu/public_html/departman/index.php
Line: 316
Function: require_once