Update app.py

app.py

@@ -77,9 +77,8 @@ with gr.Blocks() as interface:
             if not query.strip():
                 return "Please enter a valid question.", chat_history
             answer = generate_chat_answer(query)
-            chat_history.append(
-                     (query, answer)
-            )
+            chat_history.append({"role": "user", "content": query})
+            chat_history.append({"role": "assistant", "content": answer})
             logger.info(f"Updated Chat History:\n{chat_history}")
             return "", chat_history