Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /var/www/html/extensions/PageForms/tests/phpunit/integration/includes/PFFormLinkerTest.php:6 Stack trace: #0 {main} thrown in /var/www/html/extensions/PageForms/tests/phpunit/integration/includes/PFFormLinkerTest.php on line 6