Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Output\Output' not found in D:\xampp7\htdocs\www\nbkm\show_pe\vendor\symfony\console\Output\BufferedOutput.php:17 Stack trace: #0 {main} thrown in D:\xampp7\htdocs\www\nbkm\show_pe\vendor\symfony\console\Output\BufferedOutput.php on line 17