Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /home/reminder_calling/srg.kuality.ca/extensions/Math/tests/phpunit/MathValidatorTest.php:14 Stack trace: #0 {main} thrown in /home/reminder_calling/srg.kuality.ca/extensions/Math/tests/phpunit/MathValidatorTest.php on line 14