A PHP Error was encountered

Severity: Notice

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

Filename: controllers/Produk.php

Line Number: 51

Backtrace:

File: /var/www/html/sosialita/application/controllers/Produk.php
Line: 51
Function: _error_handler

File: /var/www/html/sosialita/index.php
Line: 328
Function: require_once