Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/orian-wiki/vendor/wikimedia/parsoid/tests/phpunit/Parsoid/Html2Wt/SerializerStateTest.php:15 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/vendor/wikimedia/parsoid/tests/phpunit/Parsoid/Html2Wt/SerializerStateTest.php on line 15