Fatal error: Uncaught Error: Class 'Composer\Script\Event' not found in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\symfony\flex\src\Event\UpdateEvent.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\symfony\flex\src\Event\UpdateEvent.php on line 16