Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/w/vendor/mediawiki/http-request/tests/phpunit/Unit/MultiCurlRequestTest.php:18 Stack trace: #0 {main} thrown in /var/www/html/w/vendor/mediawiki/http-request/tests/phpunit/Unit/MultiCurlRequestTest.php on line 18