Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\event-dispatcher\Tests\ImmutableEventDispatcherTest.php:21 Stack trace: #0 {main} thrown in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\event-dispatcher\Tests\ImmutableEventDispatcherTest.php on line 21