Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\print-bk\vendor\symfony\translation\Tests\LoggingTranslatorTest.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print-bk\vendor\symfony\translation\Tests\LoggingTranslatorTest.php on line 19