I get Amadeus Network Error at very simple requests. How to solve it?

Question

I am trying to use the Amadeus API

amadeus = Client(
    client_id=<my_id>,
    client_secret=<my_secret> )

response = amadeus.reference_data.locations.points_of_interest.get(
    latitude = 41.3926386,
    longitude = 2.16)

I only get the error: amadeus.client.errors.NetworkError: [---]

Last week this was working perfectly. Why now it is not working? Are madeus servers down?