Fatal error: Uncaught Error: Class "PHPUnit\Framework\Constraint\Constraint" not found in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Testing\Constraints\ArraySubset.php:11 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Testing\Constraints\ArraySubset.php on line 11