A PHP Error was encountered

Severity: Warning

Message: Attempt to assign property 'total' of non-object

Filename: controllers/Principal.php

Line Number: 147

Backtrace:

File: /var/www/html/application/controllers/Principal.php
Line: 147
Function: _error_handler

File: /var/www/html/index.php
Line: 359
Function: require_once