使用weather-js的Discord天气机器人出现不稳定及空消息报错问题

几个月前我跟随教程开发了一款可根据指定地点显示天气预报的Discord机器人，该机器人基于weather-js包开发。但近期无论托管运行还是本地控制台启动，机器人均出现间歇性失效问题——部分地点无法查询天气，甚至此前可用的地点也突然无法正常使用。

失效时总会触发以下报错：

throw new DiscordAPIError(data, res.status, request);
            ^
DiscordAPIError: Cannot send an empty message
    at RequestHandler.execute (/home/container/node_modules/discord.js/src/rest/RequestHandler.js:350:13)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async RequestHandler.push (/home/container/node_modules/discord.js/src/rest/RequestHandler.js:51:14)
    at async TextChannel.send (/home/container/node_modules/discord.js/src/structures/interfaces/TextBasedChannel.js:175:15) {

核心代码展示 #

index.js

const fs = require('fs');

client.commands = new Discord.Collection();

const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));
for (const file of commandFiles) {
  const command = require(`./commands/${file}`);
  client.commands.set(command.name, command);
}
//client.on("ready")....
.....
client.on('messageCreate', async message => {
    if (!message.content.startsWith(prefix)) return;
    
    let args = message.content.slice(prefix.length).split(" ");
    let command = args.shift().toLowerCase()
    if (command === "weather") {
        client.commands.get("weather").execute(message, args, Discord, weather)
      }
    });

weather.js

var weather = require('weather-js');

const Discord = require('discord.js');

module.exports = {
    name: 'weather',
    description: "Used to get the weather of a place",
    execute(message, args, Discord, weather) {
  
      const city = args[0]
  
      weather.find({search: args.join(" "), degreeType: "C"}, function(error, result){
  
        if (error) return message.channel.send(error)
        if (!city) return message.channel.send("You must specify a location please!")
  
        if (result === undefined || result.length === 0) return message.channel.send("**Invalid location**")
  
        let current = result[0].current
        let location = result[0].location
  
        const embed = new Discord.MessageEmbed()
        .setTitle(`Weather forecast for ${current.observationpoint}`)
        .setDescription(current.skytext)
        .setThumbnail(current.imageUrl)
        .setColor("RANDOM")
        .setTimestamp()
        .addField("Temperature: ", current.temperature + "°C", true)
        .addField("Wind Speed: ", current.winddisplay, true)
        .addField("Humidity: ", `${current.humidity}%`, true)
        .addField("Timezone: ", `UTC${location.timezone}`, true)
  
        message.channel.send({ embeds: [embed]});
  
      })
  
    }
  }

想请教：是否有用户遇到过weather-js的同类问题？还是我的代码本身存在逻辑漏洞？

内容的提问来源于stack exchange，提问作者FireFenrir