Bot online time and server count discord.py

Hey guys im trying to make a bot online time and servers count command but im having some trouble

Code:

import discord
import datetime as dt
from discord.ext import commands

class Support(commands.Cog):

 def __init__(self, client):
  self.client = client

  client.launch_time = dt.datetime.utcnow()

 @commands.command()
 async def stats(self, ctx):
   delta_uptime = dt.datetime.utcnow() - client.launch_time
   hours, remainder = divmod(int(delta_uptime.total_seconds()), 3600)
   minutes, seconds = divmod(remainder, 60)
   days, hours = divmod(hours, 24)

   embed = discord.Embed(
     title = "Roumy's Stats",
     description = f"Online Time: {days}d, {hours}h, {minutes}m, {seconds}s\n" + "Servers: " +str(len(client.guilds)),
     colour = 0xeeffee)
    await ctx.send(embed = embed)

def setup(client): client.add_cog(Support(client))

The error i get is the lunch time from this code

client.launch_time = dt.datetime.utcnow()

The error is (undefined name 'client') i have tried hours to fix it but i couldn't if it's something simple pls tell me and sorry if i have write something whorg I'm new to discord.py and also I'm new in stackoverflow and I don't really know how to use it

source https://stackoverflow.com/questions/72791738/bot-online-time-and-server-count-discord-py