Update app.py

app.py

@@ -100,7 +100,7 @@ class LLM_Langchain():
                 if "messages" not in st.session_state:
                     st.session_state.messages = []
 
-                st.write(f"You are using {self.model_name} model")
+                st.write(f"You are using {self.checkpoint} model")
 
                 for message in st.session_state.messages:
                     with st.chat_message(message.get('role')):