这是导致错误的代码块，如果我从函数中删除Navigator.pushNamed，则不会发生错误

RoundedButton(buttonColor: Colors.lightBlueAccent,buttonText: 'Log In',
                onPress: (){Navigator.pushNamed(context, LoginScreen.id);}, <-- This line is causing error
            ),

这是RoundedButton的代码

class RoundedButton extends StatelessWidget {
  RoundedButton({required this.buttonColor, required  this.buttonText, required this.onPress});

  final Color buttonColor;
  final String buttonText;
  final Function onPress;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.symmetric(vertical: 16.0),
      child: Material(
        elevation: 5.0,
        color: buttonColor,
        borderRadius: BorderRadius.circular(30.0),
        child: MaterialButton(
          onPressed: onPress(),
          minWidth: 200.0,
          height: 42.0,
          child: Text(
            buttonText,
            style: TextStyle(color: Colors.white,),
          ),
        ),
      ),
    );
  }
}

这是我得到The following assertion was thrown building RoundedButton(dirty): setState() or markNeedsBuild() called during build.和The widget which was currently being built when the offending call was made was: RoundedButton dirty The relevant error-causing widget was: RoundedButton RoundedButton:file:///D:/Flutter%20Projects/flashchat/lib/screens/welcome_screen.dart:86:13的错误
我需要在按下按钮时导航到loginscreeen，但导航器在函数内部导致错误。我尝试将其放入另一个函数，但也引发相同的错误。不知道如何导航到其他屏幕。
我正在遵循Angela Yu的课程，它运行得非常好。我正在Windows 10上运行Flutter 3.3.10版本