I am trying to program a discord chat bot, that when the command '!help' is directed to a certain text channel, the bot writes a direct message to the person who wrote the command in order to answer a series of questions, this is the code that I try:

const {Client, RichEmbed, Intents, MessageEmbed} = require('discord.js');
const bot = new Client({ intents: [Intents.FLAGS.GUILDS, Intents.FLAGS.GUILD_MESSAGES, Intents.FLAGS.DIRECT_MESSAGES] });
 
const token = 'TOKEN';
 
const PREFIX = '!';
 
 
bot.on('ready', () => {
    console.log(`Logged in as ${bot.user.tag}!`);
})

bot.on('messageCreate', message => {
    let args = message.content.substring(PREFIX.length).split(" ");
    
    switch (args[0]) { 
        case 'help':
            const Embed = new MessageEmbed()
            .setTitle("Helper Embed")
            .setColor(0xFF0000)
            .setDescription("Make sure to use the !help to get access to the commands");
 
            message.author.send(Embed);
        break;
    }
 
});
                            
bot.login(token);

However, it throws me a DiscordAPIError error. Which is the following:

node_modules/discord.js/src/rest/RequestHandler.js:350
      throw new DiscordAPIError(data, res.status, request);
            ^

DiscordAPIError: Cannot send an empty message
    at RequestHandler.execute (/Users/mybot/node_modules/discord.js/src/rest/RequestHandler.js:350:13)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async RequestHandler.push (/Users/mybot/node_modules/discord.js/src/rest/RequestHandler.js:51:14)
    at async DMChannel.send (/Users/mybot/node_modules/discord.js/src/structures/interfaces/TextBasedChannel.js:176:15) {
  method: 'post',
  path: '/channels/98595393932745/messages',
  code: 50006,
  httpStatus: 400,
  requestData: {
    json: {
      content: undefined,
      tts: false,
      nonce: undefined,
      embeds: undefined,
      components: undefined,
      username: undefined,
      avatar_url: undefined,
      allowed_mentions: undefined,
      flags: undefined,
      message_reference: undefined,
      attachments: undefined,
      sticker_ids: undefined
    },
    files: []
  }
}