Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\r10csm\vendor\fakerphp\faker\test\Faker\Extension\ContainerTest.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10csm\vendor\fakerphp\faker\test\Faker\Extension\ContainerTest.php on line 17