我正在開(kāi)發(fā)一個(gè)不和諧項(xiàng)目，在該項(xiàng)目中我需要錄制用戶(hù)聲音，我正在關(guān)注此文檔。到目前為止，這就是我寫(xiě)的：const fs = require('fs');const Discord = require('discord.js');const client = new Discord.Client();client.once('ready', () => {    console.log('Ready!');});client.on('message', async message => {    if (message.content === 'a' && message.member.voice.channel) {        const connection = await message.member.voice.channel.join();        const audio = connection.receiver.createStream('user_id?', { mode: 'pcm' });        audio.pipe(fs.createWriteStream('user_audio'));    }});client.login('token');但問(wèn)題是 user_audio 文件總是空的！