Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in E:\xampp\htdocs\webhost_v3\vendor\symfony\translation\Test\ProviderFactoryTestCase.php:32 Stack trace: #0 {main} thrown in E:\xampp\htdocs\webhost_v3\vendor\symfony\translation\Test\ProviderFactoryTestCase.php on line 32