Projects API Not working: AttributeError: 'NoneType' object has no attribute 'get_auth_settings'

[dempstert]

Am Trying to use the projects API. Getting this error:
AttributeError: 'NoneType' object has no attribute 'get_auth_settings'

I think this might be a more general issue, not specific to projects.
However, I can't identify the issue.

What I've Tried:

1. Create a Oauth2Credentials object
2. Get the tenant_id
3. Instantiate a projects_api object, using an OAuth2Token with my client_id and client_secret
4. Attempt to call the projects API

from xero_python.api_client import ApiClient
from xero_python.project import ProjectApi
from xero import Xero
from xero.auth import OAuth2Credentials

creds = {
    'client_id': ...,
    'client_secret': ...,
    'callback_uri': ...,
    'auth_state': ...,
    'token': {
        ....
    },
    'scope': ['projects', ....]
}
oauth_creds = OAuth2Credentials(**creds)
tenant_id = oauth_creds.tenant_id

api_client = ApiClient(
    Configuration(
        debug=False,
        oauth2_token=OAuth2Token(
            client_id='my_client_id', 
            client_secret='my_client_secred'
        ),
    ),
    pool_threads=1,
)
projects_api = ProjectApi(api_client)
projects_api.get_projects(tenant_id)

Error:

Traceback (most recent call last):
  File "/home/python/.local/lib/python3.9/site-packages/IPython/core/interactiveshell.py", line 3508, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-15-e4e42647476a>", line 1, in <module>
    papi.get_projects(<my_tenant_id>)
  File "/home/python/.local/lib/python3.9/site-packages/xero_python/project/api/project_api.py", line 565, in get_projects
    return self.api_client.call_api(
  File "/home/python/.local/lib/python3.9/site-packages/xero_python/api_client/__init__.py", line 350, in call_api
    return self.__call_api(
  File "/home/python/.local/lib/python3.9/site-packages/xero_python/api_client/__init__.py", line 186, in __call_api
    self.update_params_for_auth(header_params, query_params, auth_settings)
  File "/home/python/.local/lib/python3.9/site-packages/xero_python/api_client/__init__.py", line 576, in update_params_for_auth
    auth_setting = self.configuration.auth_settings(auth)
  File "/home/python/.local/lib/python3.9/site-packages/xero_python/api_client/configuration.py", line 221, in auth_settings
    return self.oauth2_token.get_auth_settings()
AttributeError: 'NoneType' object has no attribute 'get_auth_settings'