Update app.py

app.py

@@ -616,7 +616,7 @@ def display_file_history_in_sidebar():
             st.session_state.should_rerun = True
     with col4:
         if st.button("⬇️ Zip All"):
-            zip_name = create_zip_of_files(all_md, all_mp3, all_wav, st.session_state.get('last_query', ''))
+            zip_name = create_zip_of_files(md_files, mp3_files, wav_files, st.session_state.get('last_query', ''))
             if zip_name:
                 st.sidebar.markdown(get_download_link(zip_name, "zip"), unsafe_allow_html=True)