Severity: Notice
Message: Trying to access array offset on value of type null
Filename: controllers/School.php
Line Number: 240
Backtrace:
File: /var/www/schoolcalendar.net/application/controllers/School.php
Line: 240
Function: _error_handler
File: /var/www/schoolcalendar.net/index.php
Line: 315
Function: require_once
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