A PHP Error was encountered

Severity: Notice

Message: Undefined property: Paginas::$db

Filename: core/Model.php

Line Number: 57

Backtrace:

File: /home/ec000132/public_html/rb/application/models/gestor.php
Line: 58
Function: __get

File: /home/ec000132/public_html/rb/application/controllers/paginas.php
Line: 18
Function: listaPaginas

File: /home/ec000132/public_html/rb/index.php
Line: 315
Function: require_once

Fatal error: Uncaught Error: Call to a member function select() on null in /home/ec000132/public_html/rb/application/models/gestor.php:58 Stack trace: #0 /home/ec000132/public_html/rb/application/controllers/paginas.php(18): Gestor->listaPaginas() #1 /home/ec000132/public_html/rb/system/core/CodeIgniter.php(310): Paginas->__construct() #2 /home/ec000132/public_html/rb/index.php(315): require_once('/home/ec000132/...') #3 {main} thrown in /home/ec000132/public_html/rb/application/models/gestor.php on line 58