Fatal error: Uncaught Error: Class 'Symfony\Component\Process\Pipes\AbstractPipes' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\process\Pipes\WindowsPipes.php:27 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\process\Pipes\WindowsPipes.php on line 27