Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in E:\xampp\htdocs\vendor\fzaninotto\faker\test\Faker\DefaultGeneratorTest.php:8 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\fzaninotto\faker\test\Faker\DefaultGeneratorTest.php on line 8