ClientSession gets closed unexpected leading to RuntimeError: Session is closed about darksky HOT 5 CLOSED

from aiohttp import ClientSession
import asyncio
import os
from darksky.api import DarkSkyAsync

API_KEY = os.getenv('DARKSKY_SECRET_KEY')


async def test():
    client = DarkSkyAsync(API_KEY)
    async with ClientSession() as session:
        forecast1 = await client.get_forecast(
            latitude=40,
            longitude=-80,
            lang='de',
            client_session=session
        )
        print(forecast1.currently)
        async with session.get('https://google.com') as google_response:
            print(await google_response.text())
        forecast2 = await client.get_forecast(
            latitude=40,
            longitude=-80,
            lang='de',
            client_session=session
        )
        print(forecast2.currently)


if __name__ == '__main__':
    asyncio.get_event_loop().run_until_complete(test())

class RequestMangerAsync(BaseRequestManger):
    async def make_request(
        self,
        url: str,
        client_session: ClientSession,
        **params
    ):
        assert isinstance(client_session, ClientSession), type(client_session)

        for key in list(params.keys()):
            if params[key] is None:
                del params[key]
            elif isinstance(params[key], list):
                params[key] = ",".join(params[key])

        async with client_session.get(
            url, params=params, headers=self.headers
        ) as resp:
            response = await resp.json()
            if "error" in response:
                raise DarkSkyException(response["code"], response["error"])
        response["timezone"] = params.get("timezone") or response["timezone"]
        return response