Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\print\vendor\symfony\translation\Tests\DependencyInjection\TranslationPassTest.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print\vendor\symfony\translation\Tests\DependencyInjection\TranslationPassTest.php on line 21