Fatal error: Uncaught Error: Class "MediaWiki\Tests\Maintenance\MaintenanceBaseTestCase" not found in /usr/www/otte/public/sphunt1/extensions/CheckUser/tests/phpunit/integration/maintenance/PopulateCheckUserTablesWithSimulatedDataTest.php:21 Stack trace: #0 {main} thrown in /usr/www/otte/public/sphunt1/extensions/CheckUser/tests/phpunit/integration/maintenance/PopulateCheckUserTablesWithSimulatedDataTest.php on line 21