Acho que o Stateless está diferente

Fiz o passo a passo do vídeo, porém está dando erro, segue o código e posteriormente o erro que está aparecendo pra mim.

home: Scaffold(
  appBar: AppBar(
    title: Text('Tarefas'),
  ),
  body: Column(
    mainAxisAlignment: MainAxisAlignment.spaceBetween,
    children: [
      Task(),
      Task(),
      Task(),
    ],
  ),
  floatingActionButton: FloatingActionButton(onPressed: () {}),
));
}
}


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

@override
Widget build(BuildContext context) {
return const 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('Aprender Flutter'),
            ElevatedButton(
              onPressed: () {}, child: Icon(Icons.arrow_drop_up),
            ),
          ],
        ),
      ),
    ],
  ),
);
}
}

Erro: lib/main.dart:45:11: Error: Cannot invoke a non-'const' constructor where a const expression is expected. Try using a constructor or factory that is 'const'. Container( ^^^^^^^^^ lib/main.dart:55:17: Error: Cannot invoke a non-'const' constructor where a const expression is expected. Try using a constructor or factory that is 'const'. Container( ^^^^^^^^^ lib/main.dart:62:30: Error: Not a constant expression. onPressed: () {}, child: Icon(Icons.arrow_drop_up), ^^ lib/main.dart:49:11: Error: Cannot invoke a non-'const' constructor where a const expression is expected. Try using a constructor or factory that is 'const'. Container( ^^^^^^^^^ lib/main.dart:42:18: Error: Cannot invoke a non-'const' constructor where a const expression is expected. Try using a constructor or factory that is 'const'. return const Container( ^^^^^^^^^