Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\kotsch.tech\kotsch-tech - Kopie (2)\vendor\symfony\translation-contracts\Test\TranslatorTest.php:34 Stack trace: #0 {main} thrown in C:\xampp\htdocs\kotsch.tech\kotsch-tech - Kopie (2)\vendor\symfony\translation-contracts\Test\TranslatorTest.php on line 34