Update app.py

app.py

@@ -46,5 +46,5 @@ if len(df) != 0:
         df['context'][st.session_state.idx] = txt_context
         df['question'][st.session_state.idx] = txt_question
         df['answer'][st.session_state.idx] = txt_answer
-        btn_download = col_4.download_button(data=df, label=':arrow_down_small: Download file', use_container_width=True, file_name="checked.csv", mime="text/csv")
+        btn_download = col_4.download_button(data=df.to_csv(), label=':arrow_down_small: Download file', use_container_width=True, file_name="checked.csv", mime="text/csv")
         df.to_csv(path_or_buf='./Legal_AbstractiveA.csv', index=None)