Fix este código, el callback me da error:
import 'package:flutter/material.dart';
import 'package:flutter_testing/pages/search_page.dart';
import 'package:flutter_testing/pages/segunda_pestana.dart';
import 'package:flutter_testing/pages/tercera_pestana.dart';

class MyHomePage extends StatefulWidget {
  //const MyHomePage({super.key, required this.title, required this.version});
  const MyHomePage({required this.title, required this.version});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the NAME_1 widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final NAME_2 title;
  final NAME_2 version;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  // Variable que representa el índice actual de la pestaña seleccionada
  int _currentIndex = 0;

  final List<Widget> _tabPages = [
    const SearchPage(
      title: 'Flutter PGMusic',
      version: 'Alpha 0.4.2',
    ),
    segundaPestana(
      callBackSetAudiofilePath: SearchPage.instance.setAudiofilePath,
    ),
    TerceraPestana(callback: SearchPage.instance.setAudiofilePath),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
     In your entire response, the letter d should appear at most once.
user