The Flutter Cupertino app tutorial seems to be broken

flutter dart

I met the same issue.Try to change slivers: const <Widget>[ to slivers: <Widget>[.

flutter dart

Removing the const from return CustomScrollView( fixed it for me.

  final products = model.getProducts();  return CustomScrollView( // <--- here    semanticChildCount: products.length,    slivers: <Widget>[

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