Fatal error: Uncaught Error: Class 'Symfony\Component\ErrorHandler\Exception\FlattenException' not found in C:\xampp\htdocs\ApiSigestWin\vendor\easycorp\easyadmin-bundle\src\Exception\FlattenException.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\vendor\easycorp\easyadmin-bundle\src\Exception\FlattenException.php on line 10