A PHP Error was encountered

Severity: Notice

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

Filename: front/subcategory_page.php

Line Number: 36

Backtrace:

File: /home/customer/www/chandellebooks.com/public_html/application/views/front/subcategory_page.php
Line: 36
Function: _error_handler

File: /home/customer/www/chandellebooks.com/public_html/application/controllers/front/Subcategory.php
Line: 44
Function: view

File: /home/customer/www/chandellebooks.com/public_html/index.php
Line: 315
Function: require_once

: