KeyError on results_page if initiate quiz and come back to it after a short while

[Airofoil]

Thanks for the fun app!

I initiated the quiz, completed the first page, then came back later to complete the rest of it (>20min), but upon completion, got the below error at the results page. I was able to restart the quiz from the start, and was able to complete it successfully and see my results, but upon refreshing the results page, the same below error appears:

KeyError: This app has encountered an error. The original error message is redacted to prevent data leaks. Full error details have been recorded in the logs (if you're on Streamlit Cloud, click on 'Manage app' in the lower right of your app).
Traceback:

File "/mount/src/shelfside/main.py", line 30, in <module>
    pg.run()
File "/home/adminuser/venv/lib/python3.12/site-packages/streamlit/navigation/page.py", line 300, in run
    exec(code, module.__dict__)  # noqa: S102
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/mount/src/shelfside/personality-quiz/06_results_page.py", line 61, in <module>
    dictList = [st.session_state[f'page{i+1}_results'] for i in range(4)]
                ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
File "/home/adminuser/venv/lib/python3.12/site-packages/streamlit/runtime/state/session_state_proxy.py", line 101, in __getitem__
    return get_session_state()[key]
           ~~~~~~~~~~~~~~~~~~~^^^^^
File "/home/adminuser/venv/lib/python3.12/site-packages/streamlit/runtime/state/safe_session_state.py", line 104, in __getitem__
    return self._state[key]
           ~~~~~~~~~~~^^^^^
File "/home/adminuser/venv/lib/python3.12/site-packages/streamlit/runtime/state/session_state.py", line 471, in __getitem__
    raise KeyError(_missing_key_error_message(key))```

[Json-To-String]

This is incredibly helpful! I had gotten reports that people had been getting KeyErrors - having watched a few people take the test I had previously seen people skip questions and submit the test and had backburnered fixing or guarding against that, but this is related to how Streamlit caches the session state and certainly not intended for how the test works. I believe this comes from the refresh dumping all variables within the session state, which would normally be fine, but I would prefer to preserve the results until the user explicitly clicks a button to restart the test.

I or someone else can take a look at this soon, thanks for the issue.