Flutter 我一直在try 创建按钮以导航到第二页，但不知何故 RaisedButton 功能无法正常工作

我一直在关注yt创建导航 map 按钮的视频，但我不明白我在RaisedButton行上做错了什么(我在前面和后面放了星号)

import 'package:flutter/material.dart';
import 'package:ionicons/ionicons.dart';
import 'package:avenique/pages/PlanningPaymentScreen.dart';

class RootApp extends StatelessWidget {
  RootApp({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        leading: IconButton(
            onPressed: () {
              print("menu pressed");
            },
            icon: Icon(Icons.menu)),
        title: Text("PlanningPage"),
        actions: <Widget>[
          IconButton(
              onPressed: () {
                print("search pressed");
              },
              icon: Icon(Icons.search)),
        ],
      ),
      body: Center(
     **   child:RaisedButton(  **
            child: Text(
              'Next Screen',
              style: TextStyle(
                color: Color.fromARGB(255, 255, 255, 255),
              ),
              ),
              Color: Color.fromARGB(255, 0, 0, 0),
              onPressed: () {
                Navigator.push(
                  context,
                  MaterialPageRoute(
                      builder: (context) => PlanningPaymentScreen()),
                );
              }),
      ),
    );
  }


}

我希望代码能够顺利运行.谢谢你的帮助！