Fatal error: Uncaught Error: Interface "Symfony\Component\Console\Completion\Output\CompletionOutputInterface" not found in /home/galtechstudents/public_html/steffy/Laravel-Intro/example-app/vendor/symfony/console/Completion/Output/FishCompletionOutput.php:20 Stack trace: #0 {main} thrown in /home/galtechstudents/public_html/steffy/Laravel-Intro/example-app/vendor/symfony/console/Completion/Output/FishCompletionOutput.php on line 20