Fatal error: Uncaught Error: Class "MediaWiki\Extension\Math\InputCheck\BaseChecker" not found in /home/reminder_calling/srg.kuality.ca/extensions/Math/src/InputCheck/MathoidChecker.php:11 Stack trace: #0 {main} thrown in /home/reminder_calling/srg.kuality.ca/extensions/Math/src/InputCheck/MathoidChecker.php on line 11