Update app.py

app.py

@@ -6,13 +6,14 @@ import requests
 from bs4 import BeautifulSoup
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain_text_splitters import RecursiveCharacterTextSplitter
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
 from langchain_groq import ChatGroq
 from langchain.schema import Document
 
 # ⬇️ New imports replacing RetrievalQAWithSourcesChain
 from langchain.chains.combine_documents import create_stuff_documents_chain
 from langchain.chains.retrieval import create_retrieval_chain
+from langchain_community.chains import RetrievalQAWithSourcesChain
 from langchain_core.prompts import ChatPromptTemplate
 from langchain_core.output_parsers import StrOutputParser