A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: controllers/Page.php

Line Number: 26

Backtrace:

File: /home/admin/web/hurungu.mn/public_html/application/controllers/Page.php
Line: 26
Function: _error_handler

File: /home/admin/web/hurungu.mn/public_html/index.php
Line: 315
Function: require_once