A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: views/evento.php

Line Number: 3

Backtrace:

File: /var/www/vhosts/culturanav.com.br/httpdocs/application/views/evento.php
Line: 3
Function: _error_handler

File: /var/www/vhosts/culturanav.com.br/httpdocs/application/controllers/Agenda.php
Line: 57
Function: view

File: /var/www/vhosts/culturanav.com.br/httpdocs/index.php
Line: 318
Function: require_once