是否未定义discord.js embedMsg？

const Discord = require('discord.js');
const client = new Discord.Client();

client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}!`);
});

client.on('message', msg => {
  if (msg.content === '!embed') {
    const embedMsg = new Discord.MessageEmbed()
      .setColor('#0099ff')
      .setTitle('Embed Message')
      .setDescription('This is an example of an embed message.')
      .setAuthor('Author Name', 'https://example.com/avatar.png', 'https://example.com')
      .setImage('https://example.com/image.png')
      .setTimestamp()
      .setFooter('Footer Text', 'https://example.com/footer.png');

    msg.channel.send(embedMsg);
  }
});

client.login('your-token-goes-here');