Update app.py

app.py

@@ -46,8 +46,8 @@ pipeline.connect("prompt_builder.prompt", "llm.prompt")
 
 def respond(prompt, use_rag):
     if use_rag:
-        result = pipeline.run({"prompt_builder": {"question": question},
-                   "ranker": {"query": question},
+        result = pipeline.run({"prompt_builder": {"question": prompt},
+                   "ranker": {"query": prompt},
                    "fetcher": {"urls": ["https://haystack.deepset.ai/blog/introducing-haystack-2-beta-and-advent"]},
                     "llm":{"generation_kwargs": {"max_new_tokens": 350}}})
         return result['llm']['replies'][0]