A PHP Error was encountered

Severity: Notice

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

Filename: controllers/School.php

Line Number: 241

Backtrace:

File: /var/www/usholidayscalendar.com/application/controllers/School.php
Line: 241
Function: _error_handler

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

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