Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/trairtil/public_html/vendor/phpunit/php-invoker/tests/InvokerTest.php:21 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/phpunit/php-invoker/tests/InvokerTest.php on line 21