Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /var/www/html/orian-wiki/skins/Vector/tests/phpunit/integration/ServiceWiringTest.php:20 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/skins/Vector/tests/phpunit/integration/ServiceWiringTest.php on line 20