Having problem with getting started.

[ltsimple]

I am trying to explore AD API and I followed the documentation and got all 4 of my tokens. Then I tried this code which showed in the pypi page:

from ad_api.api import sponsored_products
from pprint import pprint

def main():
  my_credentials = dict(
    refresh_token=getenv("AD_API_REFRESH_TOKEN"),
    client_id=getenv("AD_API_APP_ID"),
    client_secret=getenv("AD_API_CLIENT_SECRET"),
    profile_id=getenv("AD_API_PROFILE_ID")
  )
  
  result=sponsored_products.Campaigns(credentials=my_credentials).list_campaigns()
  pprint(result)

if __name__ == "__main__":
  main()

and I get an AttributeError:

self.credentials = CredentialProvider(account, credentials).credentials
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'CredentialProvider' object has no attribute 'credentials'. Did you mean: 'load_credentials'?

I have no idea why I'm getting this error. I checked and have the right credentials.