Update app.py

app.py

@@ -161,7 +161,7 @@ def create_conversational_rag_chain(retriever):
     callback_manager = CallbackManager([StreamingStdOutCallbackHandler()])
 
     llm = ChatLlamaCpp(
-        model_path = "qwen2-0_5b-instruct-q8_0.gguf",
+        model_path = "gemma-2-2b.Q8_0.gguf",
         seed = 41,
         n_gpu_layers=0,
         temperature=0.4,