Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\ApiSigestWin\vendor\knplabs\knp-snappy-bundle\tests\FunctionalTest.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\vendor\knplabs\knp-snappy-bundle\tests\FunctionalTest.php on line 8