Update app.py

app.py

@@ -4,7 +4,7 @@ import tempfile
 import fitz  # PyMuPDF
 from groq import Groq
 from langchain_community.embeddings import HuggingFaceEmbeddings
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.docstore.document import Document
 from langchain.chains import RetrievalQA