UnhandledPromiseRejectionWarning：TypeError：无法读取未定义的属性“发送”答案

【问题标题】：UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'send' of undefinedUnhandledPromiseRejectionWarning：TypeError：无法读取未定义的属性“发送”
【发布时间】：2021-04-09 17:04:35
【问题描述】：

我尝试为我的 discord Bot 创建 Delete/prune/purge 命令，但在 bot 删除消息后，它没有响应我创建的消息，但此错误出现在日志中：UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'send' of undefined

我也尝试将其放入命令中：.catch(() => message.channel.send(embedERRPRUNE5)) 但他回复的是错误消息而不是成功消息。

这是代码：

    if (msg.startsWith(prefix + "prune") || msg.startsWith(prefix + "purge") || msg.startsWith(prefix + "delete")) {

        ...

        var embedERRPRUNE5 = new Discord.MessageEmbed()
        .setColor("#8c00ee")
        .setTitle("❌Something went wrong, while deleting messages.")
        .setAuthor("Vittorio De Stradis ツ", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png", "...")
        
        .setFooter("If you need help, pls contact me!", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png")
        .setTimestamp();

        var embedPRUNE = new Discord.MessageEmbed()
        .setColor("#8c00ee")
        .setTitle(`✔ Deleted ${message.size}/${args[0]} messages.`)
        .setAuthor("Vittorio De Stradis ツ", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png", "...")
        
        .setFooter("If you need help, pls contact me!", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png")
        .setTimestamp();

        await message.delete()
        await message.channel.bulkDelete(args[0])
        .then(message => message.channel.send(embedPRUNE)).then(d => d.delete({timeout: 15000})) // In quanto tempo questo messaggio verrà eliminato (in ms).
        .catch(() => message.channel.send(embedERRPRUNE5)) // Questo errore comparirà quando il bot non ha l'accesso per farlo.
    }```

【问题讨论】：

标签： javascript node.js visual-studio-code discord discord.js

【解决方案1】：

它显示嵌入错误，因为在您的 .then(message) 代码中，这意味着您将而不是 value then 是 message 但它不重视 message 它是 then 的 value name message

.then(message => message.channel.send(embedPRUNE)).then(d => d.delete({timeout: 15000})) // In quanto tempo questo messaggio verrà eliminato (in ms).

那你需要改成其他值或者使用()

试试这个代码

       if (msg.startsWith(prefix + "prune") || msg.startsWith(prefix + "purge") || msg.startsWith(prefix + "delete")) {

        var embedERRPRUNE5 = new Discord.MessageEmbed()
        .setColor("#8c00ee")
        .setTitle("❌Something went wrong, while deleting messages.")
        .setAuthor("Vittorio De Stradis ツ", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png")
        .setFooter("If you need help, pls contact me!", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png")
        .setTimestamp();

        var embedPRUNE = new Discord.MessageEmbed()
        .setColor("#8c00ee")
        .setTitle(`✔ Deleted ${args[0]} messages.`)
        .setAuthor("Vittorio De Stradis ツ", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png")
        .setFooter("If you need help, pls contact me!", "https://cdn.discordapp.com/attachments/784128595084705853/790590227277545502/Cowboy_Bepop_1.png")
        .setTimestamp();

        await message.delete()
        await message.channel.bulkDelete(args[0]).then(() => message.channel.send(embedPRUNE)).then(d => d.delete({timeout: 15000})).catch(() => message.channel.send(embedERRPRUNE5))
    }

【讨论】：