Update app.py

app.py

@@ -125,15 +125,16 @@ Refined Answer:
 
         # --- BUILD QA CHAIN ---
         qa_chain = RetrievalQA.from_chain_type(
-            llm=groq_llm,
-            retriever=vectorstore.as_retriever(),
-            chain_type="refine",
-            return_source_documents=True,
-            chain_type_kwargs={
-                "initial_response_prompt": initial_prompt,
-                "refine_prompt": refine_prompt
-            }
-        )
+        llm=groq_llm,
+        retriever=vectorstore.as_retriever(),
+        chain_type="refine",
+        return_source_documents=True,
+        chain_type_kwargs={
+        "question_prompt": custom_prompt,
+        "refine_prompt": custom_prompt   # you can use another refine prompt too
+    }
+)
+
 
         return "PDF processed successfully!"