Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\Apache24\htdocs\vendor.old2\symfony\debug\Tests\FatalErrorHandler\ClassNotFoundFatalErrorHandlerTest.php:20 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old2\symfony\debug\Tests\FatalErrorHandler\ClassNotFoundFatalErrorHandlerTest.php on line 20