Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /var/www/html/extensions/FlaggedRevs/tests/phpunit/integration/FlaggedRevsBackendTest.php:9 Stack trace: #0 {main} thrown in /var/www/html/extensions/FlaggedRevs/tests/phpunit/integration/FlaggedRevsBackendTest.php on line 9