Fatal error: Uncaught Error: Class "MediaWiki\Tests\Api\Format\ApiFormatTestBase" not found in /var/www/html/w/tests/phpunit/includes/Api/Format/ApiFormatJsonTest.php:14 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/includes/Api/Format/ApiFormatJsonTest.php on line 14