network handling and internet connection handling using mvvm with provider in flutter

Question

I am getting error in onTap. Error: The argument type 'Function' can't be assigned to the parameter type 'void Function()?'.

• 'Function' is from 'dart:core'. onTap: onTap

import 'package:flutter/material.dart';

import '../users_list/models/users_list_model.dart';
import 'app_title.dart';

class UserListRow extends StatelessWidget {
  final UserModel userModel;
  final Function onTap;
  UserListRow({required this.userModel, required this.onTap});

  @override
  Widget build(BuildContext context) {
    return InkWell(
      onTap: onTap,
      child: Container(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            AppTitle(text: userModel.name),
            Text(
              userModel.email,
              style: TextStyle(color: Colors.black),
            ),
          ],
        ),
      ),
    );
  }
}