Fatal error: Uncaught Error: Class "PHPUnit\Framework\Constraint\Constraint" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\console\Tester\Constraint\CommandIsSuccessful.php:17 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\console\Tester\Constraint\CommandIsSuccessful.php on line 17