Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /var/www/html/orian-wiki/skins/MinervaNeue/tests/phpunit/LanguagesHelperTest.php:18 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/skins/MinervaNeue/tests/phpunit/LanguagesHelperTest.php on line 18