如果{0.author}不起作用，我可以强制机器人使用嵌入作者姓名的方式进行响应吗？(Discord.py)

import discord
from discord import Embed

client = discord.Client()

@client.event
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('!hello'):
        embed = Embed(title="Hello", description="This is a custom response from the bot.", color=discord.Color.blue())
        embed.set_author(name=message.author.name, icon_url=message.author.avatar_url)
        await message.channel.send(embed=embed)

client.run('YOUR_BOT_TOKEN')