A PHP Error was encountered

Severity: Notice

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

Filename: helpers/common_helper.php

Line Number: 117

Backtrace:

File: /home/buscai/public_html/application/helpers/common_helper.php
Line: 117
Function: _error_handler

File: /home/buscai/public_html/application/views/frontend/school-detail.php
Line: 108
Function: user_logged_in

File: /home/buscai/public_html/application/views/templates/frontend_template.php
Line: 3
Function: view

File: /home/buscai/public_html/application/controllers/Home.php
Line: 913
Function: view

File: /home/buscai/public_html/index.php
Line: 316
Function: require_once