Specify Python 3.11 for deployment

.streamlit/config.toml

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+[runtime]
+python = "3.11" # Or "3.10" or "3.9" - try 3.11 first as it's recent but widely supported.

streamlit/config.toml

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-[theme]
-primaryColor = "#1f77b4"         # a blue shade
-backgroundColor = "#FFFFFF"      # white background
-secondaryBackgroundColor = "#FF7F0E" # orange accent
-textColor = "#000000"
-font = "Helvetica"