How do i make a music bot?

[Lord3n20]

Hey, i cant get a music bot with this to work.
This is what i have so far:

import discord
from discord.ext import commands
import time
import youtube_dl
youtube_dl.utils.bug_reports_message = lambda: ''
ytdl_format_options = {
    'format': 'bestaudio/best',
    'restrictfilenames': True,
    'noplaylist': True,
    'nocheckcertificate': True,
    'ignoreerrors': False,
    'logtostderr': False,
    'quiet': True,
    'no_warnings': True,
    'default_search': 'auto',
    'source_address': '0.0.0.0' # bind to ipv4 since ipv6 addresses cause issues sometimes
}
ffmpeg_options = {
    'options': '-vn'
}
ytdl = youtube_dl.YoutubeDL(ytdl_format_options)

class add(commands.Cog):
    def __init__(self, client):
        self.client = client

    @commands.command()
    async def join(self, ctx):
        await ctx.send(ctx.message.author)
        channel = ctx.message.author.voice.channel
        await channel.connect()

    @commands.command()
    async def leave(self, ctx):
        await ctx.voice_client.diconnect()

def setup(dc):
    dc.add_cog(add(dc))

And this my error:
Command raised an exception: AttributeError: 'NoneType' object has no attribute 'channel'

[Lord3n20]

I think it isnt getting the author of the message.
Could that be possible?

[TheOnlyWayUp]

It looks like the author's .voice is a None, could you try author = await ctx.guild.fetch_member(ctx.author.id) and then try accessing author's voice attribute?

[dolfies]

That won't work. They're using a very old version of the library.