Update app.py

app.py

@@ -80,11 +80,11 @@ if CFG.uploaded_file is not None:
         # IMPORTANT: Cache the conversion to prevent computation on every rerun
         return df.to_csv(index=False)
     
-    output_df = convert_df(output_df)
+    csv = convert_df(output_df)
     
     st.download_button(
         label="Download data as CSV",
-        data=output_df,
+        data=csv,
         file_name=input_data + '_result.csv',
         mime='text/csv',
     )