A PHP Error was encountered

Severity: Notice

Message: Undefined index: busca_titulo

Filename: controllers/Principal.php

Line Number: 277

Backtrace:

File: /var/www/htmlbackup2/site/Site/application/controllers/Principal.php
Line: 277
Function: _error_handler

File: /var/www/htmlbackup2/site/Site/index.php
Line: 315
Function: require_once