A PHP Error was encountered

Severity: Notice

Message: Undefined index: material

Filename: site/inter_4.php

Line Number: 48

Backtrace:

File: /var/www/vhosts/ferghana.uz/saylov.fergana.uz/application/views/site/inter_4.php
Line: 48
Function: _error_handler

File: /var/www/vhosts/ferghana.uz/saylov.fergana.uz/application/controllers/Site.php
Line: 247
Function: view

File: /var/www/vhosts/ferghana.uz/saylov.fergana.uz/index.php
Line: 315
Function: require_once