TypeError: _request() got an unexpected keyword argument 'cookies' (aiohttp)

import random
import asyncio
import json
import aiohttp
import sys
import urllib
from lxml.html.soupparser import parse
from aiohttp import ClientSession
from threading import Thread

def ttest():
    async def fetch(url, session):
        headers = {
            'Host': 'example.com'
        }
        cookies2 = {
            'test': 'test'
        }

        data = '{"test":"test"}'
        async with session.post(url, data=data, headers=headers, cookies=cookies2) as response:
            return await response.read()
    async def bound_fetch(sem, url, session):
        async with sem:
            html = await fetch(url, session)
            print(html)


    async def run(r):
        url = "https://test.com"
        tasks = []
        sem = asyncio.Semaphore(1000)
        async with aiohttp.ClientSession() as session:
            for i in range(r):
                task = asyncio.ensure_future(bound_fetch(sem, url, session))
                tasks.append(task)
            responses = asyncio.gather(*tasks)
            await responses

    number = 1
    loop = asyncio.get_event_loop()
    future = asyncio.ensure_future(run(number))
    loop.run_until_complete(future)

ttest()

This is the error: TypeError: _request() got an unexpected keyword argument 'cookies'

I want use cookies like you see in the code, but i can not, can anyone help me?