Fatal error: Uncaught Error: Class "MediaWiki\HTMLForm\OOUIHTMLForm" not found in /home/reminder_calling/srg.kuality.ca/extensions/Math/src/Widget/MathTestInputForm.php:10 Stack trace: #0 {main} thrown in /home/reminder_calling/srg.kuality.ca/extensions/Math/src/Widget/MathTestInputForm.php on line 10