UnhandledPromiseRejectionWarning: DiscordAPIError: Invalid Form Body around: Value "channel" is not snowflake

Question

我有这个代码：

let channel = this.textChannel.id;
this.textChannel.messages.fetch({around: "channel", limit: 1})
    .then(messages => {
        messages.first().edit(nowplaying);
    });

但是当我运行它时，我得到了错误

UnhandledPromiseRejectionWarning: DiscordAPIError: Invalid Form Body around:
Value “channel” is not snowflake

希望有人能帮助我。