Discord.js 当用户加入语音频道时，向特定频道发送消息不起作用

已经查找了stackoverflow上的所有问题，但没有任何效果。 如果有人加入特定的语音频道，我希望我的机器人发送消息

client.on('voiceStateUpdate', (oldMember, newMember) => {
  // Here I'm storing the IDs of their voice channels, if available
  const oldChannel = oldMember.voiceChannel ? oldMember.voiceChannel.id : null;
  const newChannel = newMember.voiceChannel ? newMember.voiceChannel.id : null;
  if (oldChannel == newChannel) return; // If there has been no change, exit

  // Here I'm getting the client's channel (client.voiceChannel does not exist)
  const clientMember = oldMember.guild.member(client.user),
    clientChannel = clientMember ? clientMember.voiceChannel.id : null;

  // Here I'm getting the channel, just replace VVV this VVV with the channel's ID
  const textChannel = oldMember.guild.channels.get('765520462439645191');
  if (!textChannel) throw new Error("That channel does not exist.");

  // Here I don't need to check if they're the same, since it would've exit before
  if (newChannel == clientChannel) {
    // console.log("A user joined.");
    textChannel.send(`${newMember} has joined the voice channel.`);
  } else if (oldChannel == clientChannel) {
    // console.log("A user left.");
    textChannel.send(`${newMember} has left the voice channel.`);
  }

---

不起作用。没有错误，但它不起作用。请帮助我，我认为这应该是可行的：

client.on（'voiceStateUpdate'，（旧成员，新成员）=>{
const newUserChannel=newMember.voice.channelID
const oldUserChannel=oldMember.voice.channelID
const textChannel=message.guild.channels.cache.get（'TEXT CHANNEL ID'）
if（newUserChannel==='VOICE CHANNEL ID'）{
textChannel.send（${newMember.user.username}（${newMember.id}）已加入频道`）
}else if（oldUserChannel==='VOICE CHANNEL ID'&&newUserChannel！=='VOICE CHANNEL ID'）{
textChannel.send（`${newMember.user.username}（${newMember.id}）已离开频道`）
}
})

虽然这可能会解决OP的问题，但添加一些解释说明为什么代码有效，为什么OPs代码无效，这将真正提高这个答案的价值。