Bot, Python, Discord - does not connect to the voice channel

I recently tried to connect to the voice channel in the discord result: It does not write errors, but the bot does not connect either:

import discord
import os
from discord.ext import commands
from discord.ext.commands import Bot
from discord.utils import get
import asyncio

client = commands.Bot(command_prefix= '/')

@client.event
async def on_ready():
    print('Connected')
    
@client.event
async def on_message(msg): pass
#    if split in msg.content:
#        await msg.delete()
#        await msg.channel.send('', delete_after=3.50)
#        await msg.channel.send('', delete_after=3.50)

@client.command
async def join(ctx):
    author = ctx.message.author
    channel = author.voice_channel
    await client.join_voice_channel(channel)

client.run('ODAzMjEyMDYyNDczNzE1NzUy.YA6fhg.wZbKolXSraQ2gVPupu0W8HixaD8')