Проблема с подключением к голосовому чату

Я столкнулся с ошибкой при подключения бота к голосовому чату

Код:

from discord.ext import commands
from youtube_dl import YoutubeDL
from asyncio import sleep

YDL_OPTIONS = {'format': 'bestaudio', 'noplaylist':'False'}
FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}

intents = discord.Intents.default()
intents.message_content = True

bot = commands.Bot(command_prefix='>', intents=intents)


@bot.command()
async def play(ctx, arg):
    global vc

    try:
        voice_channel = ctx.message.author.voice.channel
        vc = await voice_channel.connect()
    except:
        print('Уже подключен или не удалось подключиться')

    if vc.is_playing():
        await ctx.send(f'{ctx.message.author.mention}, музыка уже проигрывается.')

    else:
        with YoutubeDL(YDL_OPTIONS) as ydl:
            info = ydl.extract_info(arg, download=False)

        URL = info['formats'][0]['url']

        vc.play(discord.FFmpegPCMAudio(executable="ffmpeg\\ffmpeg.exe", source=URL, **FFMPEG_OPTIONS))

        while vc.is_playing():
            await sleep(1)
        if not vc.is_paused():
            await vc.disconnect()

bot.run('токен не покажу)')

Ошибка:

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 229, in wrapped
    ret = await coro(*args, **kwargs)
  File "C:/Users/user/PycharmProjects/***/main.py", line 29, in play
    if vc.is_playing():
NameError: name 'vc' is not defined

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\bot.py", line 1347, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 1023, in invoke
    await injected(*ctx.args, **ctx.kwargs)  # type: ignore
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 238, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: NameError: name 'vc' is not defined

Если добавить vc = '', то появляется ошибка:

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 229, in wrapped
    ret = await coro(*args, **kwargs)
  File "C:/Users/user/PycharmProjects/dojobot/main.py", line 29, in play
    if vc.is_playing():
AttributeError: 'str' object has no attribute 'is_playing'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\bot.py", line 1347, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 1023, in invoke
    await injected(*ctx.args, **ctx.kwargs)  # type: ignore
  File "C:\Users\user\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 238, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'str' object has no attribute 'is_playing'

И при любом значении vc (0, '', без разницы) появляется эта ошибка...