Fatal error: Uncaught Error: Class "Sylius\Bundle\FixturesBundle\Fixture\AbstractFixture" not found in /home/flighto/e-commerce/vendor/sylius/fixtures-bundle/tests/Loader/SampleFixture.php:19 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/fixtures-bundle/tests/Loader/SampleFixture.php on line 19