我的Discord Music机器人执行的是对象而不是文本

Question

我试图制作一个音乐机器人，但它不会执行这首歌。下面是应该收集信息并执行歌曲的部分的代码。

有人可以帮助我解决这个问题吗？我不确定如何解决此问题，因为我不知道错误从哪里开始。

最后我还粘贴了handleVideo和play类，所以您知道那里发生了什么。

if (command === 'play') {
        const voiceChannel = message.member.voiceChannel;
        if (!voiceChannel) return message.channel.send('I\'m sorry but you need to be in a voice channel to play music!');
        const permissions = voiceChannel.permissionsFor(message.client.user);
        if (!permissions.has('CONNECT')) {
            return message.channel.send('I cannot connect to your voice channel, make sure I have the proper permissions!');
        }
        if (!permissions.has('SPEAK')) {
            return message.channel.send('I cannot speak in this voice channel, make sure I have the proper permissions!');
        }

        if (url.match(/^https?:\/\/(www.youtube.com|youtube.com)\/playlist(.*)$/)) {
            const playlist = await youtube.getPlaylist(url);
            const videos = await playlist.getVideos();
            for (const video of Object.values(videos)) {
                const video2 = await youtube.getVideoByID(video.id); // eslint-disable-line no-await-in-loop
                await handleVideo(video2, message, voiceChannel, true); // eslint-disable-line no-await-in-loop
            }
            return message.channel.send(`✅ Playlist: **${playlist.title}** has been added to the queue!`);
        } else {
            try {
                var video = await youtube.getVideo(url);
            } catch (error) {
                try {
                    var videos = await youtube.searchVideos(searchString, 10);
                    let index = 0;
                    message.channel.send(`
__**Song selection:**__
${videos.map(video2 => `**${++index} -** ${video2.title}`).join('\n')}
Please provide a value to select one of the search results ranging from 1-10.
                    `);
                    // eslint-disable-next-line max-depth
                    try {
                        var response = await message.channel.awaitMessages(msg2 => msg2.content > 0 && msg2.content < 11, {
                            maxMatches: 1,
                            time: 10000,
                            errors: ['time']
                        });
                    } catch (err) {
                        console.error(err);
                        return message.channel.send('No or invalid value entered, cancelling video selection.');
                    }
                    const videoIndex = parseInt(response.first().content);
                    var video = await youtube.getVideoByID(videos[videoIndex - 1].id);
                } catch (err) {
                    console.error(err);
                    return message.channel.send('? I could not obtain any search results.');
                }
            }
            return handleVideo(video, message, voiceChannel);
        }
    }
async function handleVideo(video, message, voiceChannel, playlist = false) {
    const serverQueue = queue.get(message.guild.id);
    console.log(video);
    const song = {
        id: video.id,
        title: Util.escapeMarkdown(video.title),
        url: `https://www.youtube.com/watch?v=${video.id}`
    };
    if (!serverQueue) {
        const queueConstruct = {
            textChannel: message.channel,
            voiceChannel: voiceChannel,
            connection: null,
            songs: [],
            volume: 5,
            playing: true
        };
        queue.set(message.guild.id, queueConstruct);

        queueConstruct.songs.push(song);

        try {
            var connection = await voiceChannel.join();
            queueConstruct.connection = connection;
            play(message.guild, queueConstruct.songs[0]);
        } catch (error) {
            console.error(`I could not join the voice channel: ${error}`);
            queue.delete(message.guild.id);
            return message.channel.send(`I could not join the voice channel: ${error}`);
        }
    } else {
        serverQueue.songs.push(song);
        console.log(serverQueue.songs);
        if (playlist) return undefined;
        else return message.channel.send(`✅ **${song.title}** has been added to the queue!`);
    }
    return undefined;
});

function play(guild, song) {
    const serverQueue = queue.get(guild.id);

    if (!song) {
        serverQueue.voiceChannel.leave();
        queue.delete(guild.id);
        return;
    }
    console.log(serverQueue.songs);

    const dispatcher = serverQueue.connection.playStream(ytdl(song.url))
        .on('end', reason => {
            if (reason === 'Stream is not generating quickly enough.') console.log('Song ended.');
            else console.log(reason);
            serverQueue.songs.shift();
            play(guild, serverQueue.songs[0]);
        })
        .on('error', error => console.error(error));
    dispatcher.setVolumeLogarithmic(serverQueue.volume / 5);

    serverQueue.textChannel.send(`? Start playing: **${song.title}**`);


}

错误消息：

TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received type object
    at validateString (internal/validators.js:125:11)
    at normalizeSpawnArguments (child_process.js:411:3)
    at Object.spawn (child_process.js:545:16)
    at new FfmpegProcess (C:\Users\user\Desktop\ExoBot-master\node_modules\prism-media\src\transcoders\ffmpeg\FfmpegProcess.js:14:33)
    at FfmpegTranscoder.transcode (C:\Users\user\Desktop\ExoBot-master\node_modules\prism-media\src\transcoders\ffmpeg\Ffmpeg.js:34:18)
    at MediaTranscoder.transcode (C:\Users\user\Desktop\ExoBot-master\node_modules\prism-media\src\transcoders\MediaTranscoder.js:27:31)
    at Prism.transcode (C:\Users\user\Desktop\ExoBot-master\node_modules\prism-media\src\Prism.js:13:28)
    at AudioPlayer.playUnknownStream (C:\Users\user\Desktop\ExoBot-master\node_modules\discord.js\src\client\voice\player\AudioPlayer.js:97:35)
    at VoiceConnection.playStream (C:\Users\user\Desktop\ExoBot-master\node_modules\discord.js\src\client\voice\VoiceConnection.js:478:24)
    at play (C:\Users\user\Desktop\ExoBot-master\bot.js:322:44)