Fatal error: Uncaught Error: Class "MediaWiki\Tests\Integration\HTMLForm\HTMLFormFieldTestCase" not found in /var/www/html/w/tests/phpunit/integration/includes/HTMLForm/Field/HTMLSelectNamespaceTest.php:12 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/integration/includes/HTMLForm/Field/HTMLSelectNamespaceTest.php on line 12