The argument type 'Function' can't be assigned to the parameter type 'void Function()?'

import 'package:flutter/material.dart';
import 'package:ourchatapp/constants.dart';

class RoundedButton extends StatelessWidget {
  final String text;
  final Function press;
  final Color color, textColor;
  const RoundedButton({
    Key? key,
    required this.text,
    required this.press,
    this.color = kPrimaryColor,
    this.textColor = Colors.white,
  }) : super(key: key);
  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    return Container(
      margin: EdgeInsets.symmetric(vertical: 10),
      width: size.width * 0.8,
      child: ClipRRect(
        borderRadius: BorderRadius.circular(29),
        child: newElevatedButton(),
      ),
    );
  }
  Widget newElevatedButton() {
    return ElevatedButton(
      child: Text(
        text,
        style: TextStyle(color: textColor),
      ),
      onPressed: press,
      style: ElevatedButton.styleFrom(
          primary: color,
          padding: EdgeInsets.symmetric(horizontal: 40, vertical: 20),
          textStyle: TextStyle(
              color: textColor, fontSize: 14, fontWeight: FontWeight.w500)),
    );
  }
}

I want to design my own button, when I add it to the relevant pages, I get such an error and when I click the button, it does not switch between the pages.
I have created login and sign up buttons on the welcome screen, but when I click on these buttons, they do not switch to the relevant pages. please help me

>Solution :

Try to change press type from Function to VoidCallback, so your press parameter should look like this:

final VoidCallback press

Or try this:

nPressed : press.call()