Error: No named parameter with the name 'builder' Flutter macOS

Question

can someone please explain what to do to fix "Error: No named parameter with the name 'builder'."?

Code:

@override
  final Map<String, _i1.PageFactory> pagesMap = {
    SplashScreenRoute.name: (routeData) => _i1.CupertinoPageX<dynamic>(
        routeData: routeData,
        builder: (_) {
          return const _i4.SplashScreen();
        }),

Error:

Xcode's output: ↳ leveldb-library-evkvtgfvdszrevdlzrfbvlaovfcr lib/routes/router.gr.dart:58:9: Error: No named parameter with the name 'builder'. builder: (_) { ^^^^^^^

Flutter Doctor

Solution

I believe your parent class doesn't have a builder method, I also believe you need to use the child method and then builder inside of that.