Fatal error: Uncaught Error: Class 'PHPUnit_Framework_Constraint' not found in C:\xampp\htdocs\enercard\vendor\laravel\framework\src\Illuminate\Foundation\Testing\Constraints\PageConstraint.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\laravel\framework\src\Illuminate\Foundation\Testing\Constraints\PageConstraint.php on line 10