"Cannot assign requested address" error when trying to follow along with the flowkit tutorial.

[Mylenesch]

Hi all, I am a new flowkit user and I am trying to follow along with the tutorial here.
For context this is all the code I have:

---

!pip install flowclient
import flowclient
import os

TOKEN = "mystringtoken" #omitted the actual string

conn = flowclient.connect(
url=os.getenv("FLOWAPI_URL", "http://localhost:9090"),
token=TOKEN,
ssl_certificate=os.getenv("SSL_CERTIFICATE_FILE"),
)

query_spec = flowclient.aggregates.spatial_aggregate_spec(
locations=flowclient.daily_location_spec(
date="2016-01-01",
aggregation_unit="admin3",
method="last",
subscriber_subset=None,
)
)

query_id = flowclient.run_query(connection=conn, query_spec=query_spec)
query_id

It all works except for the part where I define the query_id. It gives me the following error:
FlowclientConnectionError: Unable to connect to FlowKit API at http://localhost:9090/: [Errno 99] Cannot assign requested address

Does someone see the mistake?

[whitews]

This repo is for the FlowKit flow cytometry library. Looks like you are using a different package.