empty response with cookies

`
from grok_client import GrokClient

cookies = {
    "sso-rw": "eyJhbGciOiJIUzI1NiJ9.ey...",
    "sso": "eyJhbGciOiJIUzI1NiJ9.eyJzZXNzaW9..."
}

client = GrokClient(cookies)
client = GrokClient({"sso": cookies['sso'], "sso-rw": cookies["sso-rw"]})

response = client.send_message("write a poem")
print(response)
`
Using either declaration method results in an empty response.