runtime error

Exit code: 1. Reason: iew this Streamlit app on a browser, run it with the following command: streamlit run app.py [ARGUMENTS] 2025-03-22 12:28:28.633 Session state does not function when running a script without `streamlit run` Traceback (most recent call last): File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/session_state.py", line 398, in __getitem__ return self._getitem(widget_id, key) File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/session_state.py", line 443, in _getitem raise KeyError KeyError During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/session_state_proxy.py", line 119, in __getattr__ return self[key] File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/session_state_proxy.py", line 90, in __getitem__ return get_session_state()[key] File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/safe_session_state.py", line 93, in __getitem__ return self._state[key] File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/session_state.py", line 400, in __getitem__ raise KeyError(_missing_key_error_message(key)) KeyError: 'st.session_state has no key "chat_history". Did you forget to initialize it? More info: https://docs.streamlit.io/library/advanced-features/session-state#initialization' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/user/app/app.py", line 45, in <module> for user_message, bot_response in st.session_state.chat_history: File "/usr/local/lib/python3.10/site-packages/streamlit/runtime/state/session_state_proxy.py", line 121, in __getattr__ raise AttributeError(_missing_attr_error_message(key)) AttributeError: st.session_state has no attribute "chat_history". Did you forget to initialize it? More info: https://docs.streamlit.io/library/advanced-features/session-state#initialization

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