问错误:必须提供所需的命名参数“vinNumber”

EN

**Getting Started class:**

FlatButton(
                    child: Text(
                      'Get a price quote for free!',
                      style: TextStyle(
                        fontSize: 12,
                        fontWeight: FontWeight.bold
                      ),
                    ),
                    shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(10),
                    ),
                    padding: const EdgeInsets.all(10),
                    color: Colors.green ,
                    textColor: Colors.white,
                    onPressed: () {
                      **Get.to(LandingPage());**
                    },
                  ),
**Landing Page class**
class LandingPage extends StatefulWidget {
   String? vinNumber;

  LandingPage({required this.vinNumber});

    @override
  _LandingPageState createState() => _LandingPageState(vinNumber!);
}

class _LandingPageState extends State<LandingPage> {
   String? vinNumber;
 _LandingPageState(this.vinNumber);

**VIN Class**
    LandingPage(vinNumber:_getVin.text);