Fatal error: Uncaught Error: Class "Symfony\Component\Notifier\Test\AbstractTransportFactoryTestCase" not found in I:\www\picman\vendor\symfony\notifier\Test\TransportFactoryTestCase.php:21 Stack trace: #0 {main} thrown in I:\www\picman\vendor\symfony\notifier\Test\TransportFactoryTestCase.php on line 21