Update app.py

app.py

@@ -268,7 +268,7 @@ def process_and_output_files(input_files):
         else:
             extracted_data = {
                 "S.No.": item_no,
-                "Nature of Expenditure": Category[category],
+                "Nature of Expenditure": str(category),
                 "Bill/Invoice No.": response_dict.get("uids"),
                 "Amount(Rs.)": response_dict.get("total")
             }