Update app.py

app.py

@@ -454,7 +454,7 @@ class LlamaGenerator(BaseGenerator):
         self,
         context: str,
         user_input: str,
-        chat_history: List[Tuple[str, str]],
+        chat_history: List[Tuple[str, str]], 
         model_kwargs: Dict[str, Any],
         max_history_turns: int = 3,
         strategy: str = "default",
@@ -727,7 +727,7 @@ async def generate(
             context=request.context or "",
             user_input=user_input,
             chat_history=chat_history,
-            config=config
+            model_kwargs=config
         )
         
         return GenerationResponse(