A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Catalog.php

Line Number: 584

Backtrace:

File: /var/www/u0835393/public_html/nachni2022/application/controllers/Catalog.php
Line: 584
Function: _error_handler

File: /var/www/u0835393/public_html/nachni2022/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 /var/www/u0835393/public_html/nachni2022/system/core/Exceptions.php:271)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /var/www/u0835393/public_html/nachni2022/application/controllers/Catalog.php
Line: 587
Function: redirect

File: /var/www/u0835393/public_html/nachni2022/index.php
Line: 315
Function: require_once