Fatal error: Uncaught Error: Class "MediaWiki\Tests\Api\Format\ApiFormatTestBase" not found in /var/www/html/w/tests/phpunit/includes/Api/Format/ApiFormatXmlTest.php:13 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/includes/Api/Format/ApiFormatXmlTest.php on line 13