Update app.py

app.py

@@ -1,12 +1,12 @@
 import os
 import tempfile
 import streamlit as st
-from langchain.document_loaders import PyPDFLoader
-from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain.embeddings import HuggingFaceEmbeddings
-from langchain.vectorstores import FAISS
-from langchain.chains import RetrievalQA
-from langchain.chat_models import ChatOpenAI
+from langchain_community.document_loaders import PyPDFLoader
+from langchain_community.text_splitter import RecursiveCharacterTextSplitter
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import FAISS
+from langchain_community.chains import RetrievalQA
+from langchain_community.chat_models import ChatOpenAI
 
 # Streamlit App Title
 st.title("📄 DeepSeek-Powered RAG Chatbot")