Update app.py

app.py

@@ -2,7 +2,7 @@ import streamlit as st
 import os
 from huggingface_hub import InferenceClient
 from langchain_community.document_loaders import PDFPlumberLoader
-from langchain_text_splitters import RecursiveCharacterTextSplitter
+from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_core.vectorstores import InMemoryVectorStore
 from langchain_core.prompts import ChatPromptTemplate