Update app.py

app.py

@@ -4,7 +4,7 @@ import gradio as gr
 from langchain_community.document_loaders import PyPDFLoader
 from langchain_text_splitters import RecursiveCharacterTextSplitter
 from langchain_huggingface import HuggingFaceEmbeddings
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
 from langchain.chains import RetrievalQA
 from langchain_groq import ChatGroq
 from langchain_core.prompts import PromptTemplate