Fatal error: Uncaught Error: Class "MediaWikiLangTestCase" not found in /var/www/html/w/tests/phpunit/includes/EditPage/EditPageWithoutFixedTestUsersTest.php:27 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/includes/EditPage/EditPageWithoutFixedTestUsersTest.php on line 27