Component error: zcsazzurro - No module named 'flatdict'

[dogeMcdogeface]

The problem

Following the install steps from the readme, using HACS.

Edited configuration.yaml to add

zcsazzurro:
  auth_key: xxx
  client_code: xxx

Using the "Check Configuration" function from the web UI, Shows:

Warning, Component error: zcsazzurro - No module named 'flatdict'

This should not stop Home Assistant from starting, but since it seems like a missing python library, it might affect the extension.

Version of zcsazzurro integration having the issue?

latest

Version of Home Assistant Core having the issue?

core-latest

Anything in the logs that might be useful for us?

No response

Additional information

No response