Fatal error: Uncaught Error: Class 'MediaWikiIntegrationTestCase' not found in /var/www/html/wiki_2023/extensions/Gadgets/tests/phpunit/integration/GadgetHooksTest.php:8 Stack trace: #0 {main} thrown in /var/www/html/wiki_2023/extensions/Gadgets/tests/phpunit/integration/GadgetHooksTest.php on line 8