Fatal error: Uncaught Error: Class 'Neos\Eel\FlowQuery\Operations\AbstractOperation' not found in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Framework/Neos.Eel/Tests/Functional/FlowQuery/Fixtures/ExampleNonFinalOperation.php:15 Stack trace: #0 {main} thrown in /var/www/vhosts/www.thomas-bartholomaeus.de/content/neoscms/Packages/Framework/Neos.Eel/Tests/Functional/FlowQuery/Fixtures/ExampleNonFinalOperation.php on line 15