Fatal error: Uncaught Error: Interface 'Symfony\Component\Process\Pipes\PipesInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\process\Pipes\AbstractPipes.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\process\Pipes\AbstractPipes.php on line 21