Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in E:\xampp\htdocs\api.blank_fe_delete\vendor\symfony\yaml\Tests\DumperTest.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\api.blank_fe_delete\vendor\symfony\yaml\Tests\DumperTest.php on line 19