Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 import os
 from langchain_community.document_loaders import PyPDFLoader  # Corrected import
-from langchain_community.text_splitter import RecursiveCharacterTextSplitter  # Corrected import
+from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_community.vectorstores import Chroma  # Corrected import
 from langchain.chains import ConversationalRetrievalChain  # Note: Not from "langchain_community"
 from langchain_community.embeddings import HuggingFaceEmbeddings  # Corrected import