AttributeError: 'coroutine' object has no attribute 'as_json'

[guzik]

Uruchomienie poniższego kodu powoduje błąd jak w temacie. Python 3.12.2

#!/usr/bin/env python

import vulcan

keystore = vulcan.Keystore.create(device_model="Vulcan API")

with open("keystore.json", "w") as f:
    f.write(keystore.as_json)

[guzik]

Moja wina :/