A PHP Error was encountered

Severity: Notice

Message: Undefined variable: csrf

Filename: front/topmenu.php

Line Number: 79

Backtrace:

File: S:\APData\xampp\htdocs\application\views\tw\front\topmenu.php
Line: 79
Function: _error_handler

File: S:\APData\xampp\htdocs\application\views\tw\front\header.php
Line: 85
Function: include

File: S:\APData\xampp\htdocs\application\controllers\Activity.php
Line: 80
Function: view

File: S:\APData\xampp\htdocs\index.php
Line: 315
Function: require_once