Fatal error: Uncaught Error: Class "MediaWikiLangTestCase" not found in /var/www/html/w/extensions/Wikibase/repo/domains/crud/tests/phpunit/Infrastructure/EditSummaryFormatterTest.php:38 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/Wikibase/repo/domains/crud/tests/phpunit/Infrastructure/EditSummaryFormatterTest.php on line 38