embed snipe消息显示用户id，而不是用户名discord bot python

import discord
from discord.ext import commands

bot = commands.Bot(command_prefix='!')

sniped_messages = {}

@bot.event
async def on_message_delete(message):
    sniped_messages[message.channel.id] = (message.content, message.author.id)

@bot.command()
async def snipe(ctx):
    channel_id = ctx.channel.id
    if channel_id in sniped_messages:
        content, author_id = sniped_messages[channel_id]
        author = bot.get_user(author_id)
        embed = discord.Embed(description=content)
        embed.set_author(name=f"Deleted by {author.name} ({author.id})", icon_url=author.avatar_url)
        await ctx.send(embed=embed)
    else:
        await ctx.send("No recently deleted messages.")