Fatal error: Uncaught Error: Interface "Assetic\Factory\Worker\WorkerInterface" not found in /home/gingerbrup/urban/vendor/symfony/assetic-bundle/Factory/Worker/UseControllerWorker.php:23 Stack trace: #0 {main} thrown in /home/gingerbrup/urban/vendor/symfony/assetic-bundle/Factory/Worker/UseControllerWorker.php on line 23