Fatal error: Uncaught Error: Interface 'Symfony\Component\Console\CommandLoader\CommandLoaderInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\console\CommandLoader\FactoryCommandLoader.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\console\CommandLoader\FactoryCommandLoader.php on line 21