Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\fiveplus\vendor\symfony\http-kernel\Tests\KernelTest.php:33 Stack trace: #0 {main} thrown in C:\xampp\htdocs\fiveplus\vendor\symfony\http-kernel\Tests\KernelTest.php on line 33