A PHP Error was encountered

Severity: Notice

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

Filename: controllers/Index.php

Line Number: 1275

Backtrace:

File: /var/www/html/main/application/controllers/Index.php
Line: 1275
Function: _error_handler

File: /var/www/html/main/index.php
Line: 316
Function: require_once