Update app.py

app.py

@@ -113,6 +113,7 @@ def load_llm(model_name: str, temperature: float) -> Union[ChatOpenAI, LlamaCpp]
         return ChatOpenAI(temperature=temperature, model_name=model_name)
     elif model_name.startswith("llama-2-"):
         callback_manager = CallbackManager([StreamingStdOutCallbackHandler()])
+        
         return LlamaCpp(
             model_path=f"./models/{model_name}.bin",
             input={"temperature": temperature,