Update app.py

app.py

@@ -99,7 +99,7 @@ def retrieve_document(query):
         return None
     
     try:
-        metadata_file = metadata_.json()
+        metadata_file = metadata_.json()['metadata_file']
         print(metadata_file)
     except requests.exceptions.JSONDecodeError as e:
         print(f"Error decoding metadata JSON: {e}")