Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\validator\Tests\Constraints\GroupSequenceTest.php:20 Stack trace: #0 {main} thrown in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\validator\Tests\Constraints\GroupSequenceTest.php on line 20