Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\symfony\translation-contracts\Test\TranslatorTest.php:31 Stack trace: #0 {main} thrown in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\symfony\translation-contracts\Test\TranslatorTest.php on line 31