A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'linea' of non-object

Filename: models/Articulo_modelo.php

Line Number: 221

Backtrace:

File: /home/p2000223/public_html/application/models/Articulo_modelo.php
Line: 221
Function: _error_handler

File: /home/p2000223/public_html/application/controllers/Inicio.php
Line: 72
Function: get_nombre_linea

File: /home/p2000223/public_html/index.php
Line: 315
Function: require_once