Fatal error: Uncaught Error: Interface 'Symfony\Component\Form\RequestHandlerInterface' not found in D:\workspaces\liZiPingBack\vendor\symfony\form\Extension\HttpFoundation\HttpFoundationRequestHandler.php:29 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\form\Extension\HttpFoundation\HttpFoundationRequestHandler.php on line 29