Fatal error: Uncaught Error: Class "SMW\Tests\DatabaseTestCase" not found in /var/www/html/extensions/SemanticMediaWiki/tests/phpunit/Integration/Maintenance/DumpRDFTest.php:18 Stack trace: #0 {main} thrown in /var/www/html/extensions/SemanticMediaWiki/tests/phpunit/Integration/Maintenance/DumpRDFTest.php on line 18