Fatal error: Uncaught Error: Interface 'Symfony\Component\Console\Output\OutputInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\console\Output\ConsoleOutputInterface.php:20 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\console\Output\ConsoleOutputInterface.php on line 20