Fatal error: Uncaught Error: Interface 'Symfony\Component\Console\Completion\Output\CompletionOutputInterface' not found in /var/www/development/pixtask/vendor/symfony/console/Completion/Output/FishCompletionOutput.php:20 Stack trace: #0 {main} thrown in /var/www/development/pixtask/vendor/symfony/console/Completion/Output/FishCompletionOutput.php on line 20