我最近开始通过制作不和谐机器人来学习python。现在我正在制作一个音乐机器人，但我收到一个错误，找不到错误在哪里。你们能帮忙吗？它加入频道，但在聊天中给出错误3，如果我写！再次播放（URL），它在聊天中给出错误4。

这是代码：

import discord

client = discord.Client ()

@client.event
async def on_ready():
    print(client.user.name)
    print("-------------------")

@client.event
async def on_message(message):
    if message.content.startswith("!stop"):
        try:
            voice_client = client_voice_in(message.server)
            await voice_client.disconnect()
        except AttributeError:
            await client.send_message(message.channel, "I'm not connected.")
        except Exception as Hugo:
            await client.send_message(message.channel, "Error1_______|type|_______".format(type=Hugo))

    if message.content.startswith("!play"):
        try:
            yt_url = message.content[6:]
            if client.is_voice_connected(message.server):
                try:
                    voice = client.voice_client_in(message.server)
                    players[message.server.id].stop()
                    player = await voice.create_ytdl_player(yt_url, before_options=" -reconnect 1 -reconnect_streamed 1"
                                                                                   " -reconnect_delay_max 5")
                    players[message.server.id] = player
                    player.start()
                except Exception as e:
                    await client.send_message(message.server, "Error2______[Error]".format(error=e))

            if not client.is_voice_connected(message.server):
                try:
                    channel = message.author.voice.voice_channel
                    voice = await client.join_voice_channel(channel)
                    player = await voice.create_ytdl_player(yt_url, before_options=" -reconnect 1 -reconnect_streamed 1"
                                                                                   " -reconnect_delay_max 5")
                    players[message.server.id] = player
                    player.start()
                except Exception as e:
                    await client.send_message(message.channel, "Error3____[error]".format(error=e))
        except Exception as e:
            await client.send_message(message.channel, "Error4________[error]".format(error=e))




client.run("I erased the token number before sharing, it's not the problem")