Discord.JS公告命令问题

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

const prefix = '!'; // 命令前缀

client.on('message', (message) => {
  if (!message.content.startsWith(prefix) || message.author.bot) return;

  const args = message.content.slice(prefix.length).trim().split(' ');
  const command = args.shift().toLowerCase();

  if (command === '公告') {
    if (!message.member.hasPermission('ADMINISTRATOR')) {
      return message.reply('你没有权限执行该命令！');
    }

    const announcement = args.join(' ');
    const channels = message.guild.channels.cache.filter((channel) => channel.type === 'text');

    channels.forEach((channel) => {
      channel.send(announcement);
    });
  }
});

client.login('YOUR_BOT_TOKEN');