Context: Found this candidate, but the arguments don't match.

Na classe esta dando esse erro, eu substitui {super.key} por {Key? key}, mesmo assim o problema persiste.

class Task extends StatelessWidget { final String nome; const Task(this.nome,{super.key});

38:9: Context: Found this candidate, but the arguments don't match. const Task(this.nome,{super.key}); ^^^^

Código completo:

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: Text('Tarefas'),
        ),
        body: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Task(),
            Task(),
            Task(),
          ],
        ),
        floatingActionButton: FloatingActionButton(onPressed: (){}),
      ),
    );
  }
}

class Task extends StatelessWidget {
  final String nome;
  const Task(this.nome,{Key? key});

  @override
  Widget build(BuildContext context) => Container(
        child: Stack(
          children: [
            Container(
              color: Colors.blue,
              height: 140,
            ),
            Container(
              color: Colors.white,
              height: 100,
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Container(
                    color: Colors.black26,
                    width: 72,
                    height: 100,
                  ),
                  Text(nome),
                  ElevatedButton(
                      onPressed: () {}, child: Icon(Icons.arrow_drop_up)),
                ],
              ),
            ),
          ],
        ));
}