Read-the-docs's autodoc doesn't work

[matsui528]

Read-the-docs's autodoc (the function to automatically read the docstring inside codes) doesn't work. Any help?

We should see the docstring here, but cannot see anything.
https://rii.readthedocs.io/en/latest/source/api.html

The corresponding rst file is as follows. The original file is here.

API Reference
==============

.. automodule:: rii


Reconfigurable Inverted Index (Rii)
---------------------------------------

.. autoclass:: rii.Rii
    :members:
    :undoc-members:

Strangely, if we render the document manually, it works.

• Open a clean codespace
• Run the followings

cd docs
pip install -r requirements.txt
make html

• Then you can see the HTML files by

python -m http.serer 8000
# Go to `docs/_build/html`