bio[message.author.id].join( " " ) 不是一个函数

Question

自从我上一个问题以来，我一直在尝试让它工作，但是当我在通过更新的setBio命令成功获取过去的 Bio 后尝试执行profile命令时，现在发生了错误：

bio[message.author.id].join is not a function

我已经开始意识到这个问题，但我不知道如何正确解决它。

以下是错误发生位置的代码：

case 'setBio':
if(!bio[message.author.id]) {
let messages = message.channel.messages;
let authorMessages = messages.filter(m => m.author.id === message.author.id);
let setBioCommands = authorMessages.filter(m => m.content.startsWith('!setBio'));
let firstBio = setBioCommands.last();
message.channel.send('I found a Bio you have previously set. Do you want to confirm the change to that Bio?').then(r => r.delete(10000));
message.react('✅').then(() => message.react('❎'));
const filter = (reaction, user) => {
return ['✅', '❎'].includes(reaction.emoji.name) && user.id === message.author.id;
};
message.awaitReactions(filter, { max: 1, time: 10000, errors: ['time'] })
.then(collected => {
const reaction = collected.first();
if (reaction.emoji.name === '✅') {
bio[message.author.id] = firstBio
message.reply('Past Bio successfully restored!')
.then(msg => msg.delete(3000));
}
else {
message.reply('Okey, I'll delete this Bio.')
.then(msg => msg.delete(3000)); 
}
})
.catch(collected => {
message.channel.send('You didn't respond, so I'll throw this Bio into the abyss. *Buh-bye!*');
});
} else {
let newArr = args.slice(1)
bio[message.author.id] = newArr
message.channel.send('Your bio has been changed!')
.then(msg => msg.delete(3000)); 
}
break;
case 'profile':
if(!bio[message.author.id]) {
return message.channel.send('Sorry, please set a bio with `!setBio` to view your profile!')
.then(msg => msg.delete(3000)); 
} else {
const embed = new Discord.RichEmbed()
.setTitle('__' + message.author.username + ''s Profile__')
.addField(`Bio:`, bio[message.author.id].join(" ")) /// this is where the error is
.setColor(message.member.colorRole.color)
.setThumbnail(message.author.avatarURL)
message.channel.send(embed);
}
break;

Answer 1

该错误告诉您bio[message.author.id]没有.join()方法。.join()通常用于具有此类方法的数组。您可能期望bio[message.author.id]是一个数组，但它可能是其他对象。

尝试记录bio[message.author.id]以更好地了解后台发生的情况(调试过程(，然后从那里继续。