"Insufficient client config in settings"

Hello, I am very new to Python and working with APIs, but I'm trying to build a Twitter bot for a friend that would pull files and such from a shared Google Drive folder, and I'm having difficulties getting PyDrive and/or PyDrive2 set up on a web server. I've been able to get things working when only using my desktop, but for both our sakes we'd like to run it from a web host, right now in our case PythonAnywhere. I've been trying to set up my own OAuth flow with the settings.yaml, but when I attempt to run:

from pydrive2.auth import GoogleAuth
from pydrive2.drive import GoogleDrive

gauth = GoogleAuth()
gauth.LocalWebserverAuth()

drive = GoogleDrive(gauth)

I get an error reading:

Traceback (most recent call last):
  File "/home/mortypie/.local/lib/python3.9/site-packages/pydrive2/auth.py", line 516, in LoadClientConfigSettings
    self.client_config[config] = self.settings["client_config"][
KeyError: 'client_config'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/home/mortypie/quickstart.py", line 5, in <module>
    gauth.LocalWebserverAuth()
  File "/home/mortypie/.local/lib/python3.9/site-packages/pydrive2/auth.py", line 123, in _decorated
    self.GetFlow()
  File "/home/mortypie/.local/lib/python3.9/site-packages/pydrive2/auth.py", line 532, in GetFlow
    self.LoadClientConfig()
  File "/home/mortypie/.local/lib/python3.9/site-packages/pydrive2/auth.py", line 423, in LoadClientConfig
    self.LoadClientConfigSettings()
  File "/home/mortypie/.local/lib/python3.9/site-packages/pydrive2/auth.py", line 520, in LoadClientConfigSettings
    raise InvalidConfigError(
pydrive2.settings.InvalidConfigError: Insufficient client config in settings

Does anyone know where the hang up might be? I'm not experienced enough yet to know what adjustments need to be made. The only thing I've changed in the auth.py is in line 151 of auth.py to read "client_config_backend": "settings" rather than "client_config_backend": "file".

My settings.yaml file looks like

client_config_backend: settings
client_config:
  client_id: ---
  client_secret: ---

save_credentials: True
save_credentials_backend: file
save_credentials_file: credentials.json

get_refresh_token: True

oauth_scope:
  - https://www.googleapis.com/auth/drive.file
  - https://www.googleapis.com/auth/drive.install

iterative / PyDrive2

"Insufficient client config in settings" #154