Fatal error: Uncaught Error: Class 'MediaWikiTestCase' not found in /var/www/html/wiki_2023/extensions/Popups/tests/phpunit/PopupsContextTest.php:31 Stack trace: #0 {main} thrown in /var/www/html/wiki_2023/extensions/Popups/tests/phpunit/PopupsContextTest.php on line 31