Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\xampp\htdocs\_beta\ssc-batch-1986-app\vendor\symfony\translation-contracts\Test\TranslatorTest.php:34 Stack trace: #0 {main} thrown in D:\xampp\htdocs\_beta\ssc-batch-1986-app\vendor\symfony\translation-contracts\Test\TranslatorTest.php on line 34