Update app.py

app.py

@@ -86,6 +86,7 @@ def get_refs(docs, res):
   Parse response for engineered reference ids (refer to prompt template)
   Extract documents using reference ids
   '''
+  res = res.lower()  # Convert to lowercase for matching
   # This pattern should be returned by gpt3.5
   # pattern = r'ref\. (\d+)\]\.'
   pattern = r'ref\. (\d+)'