A PHP Error was encountered

Severity: Notice

Message: Undefined variable: page_subtitle

Filename: views/page.php

Line Number: 6

Backtrace:

File: /var/www/html/application/views/page.php
Line: 6
Function: _error_handler

File: /var/www/html/application/views/index.php
Line: 84
Function: include

File: /var/www/html/application/controllers/Halaman.php
Line: 52
Function: view

File: /var/www/html/index.php
Line: 315
Function: require_once