A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Lang.php

Line Number: 17

Backtrace:

File: /home/i/infoes2i/edulog.uz/public_html/merchant/application/controllers/Lang.php
Line: 17
Function: _error_handler

File: /home/i/infoes2i/edulog.uz/public_html/merchant/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/i/infoes2i/edulog.uz/public_html/merchant/system/core/Exceptions.php:272)

Filename: helpers/url_helper.php

Line Number: 565

Backtrace:

File: /home/i/infoes2i/edulog.uz/public_html/merchant/application/controllers/Lang.php
Line: 17
Function: redirect

File: /home/i/infoes2i/edulog.uz/public_html/merchant/index.php
Line: 315
Function: require_once