Update src/streamlit_app.py

src/streamlit_app.py

@@ -3,11 +3,14 @@ import streamlit as st
 from typing import Literal
 from tavily import TavilyClient
 from deepagents import create_deep_agent
-from langchain.callbacks.streamlit import StreamlitCallbackHandler
 from langgraph.store.memory import InMemoryStore
 from langchain.chat_models import init_chat_model
 from langchain_huggingface import ChatHuggingFace, HuggingFacePipeline
 
+from langchain_community.callbacks.streamlit import (
+    StreamlitCallbackHandler,
+)
+
 
 # --- Sidebar: API Keys ---
 st.sidebar.header("🔑 API Keys")