Update app.py

app.py

@@ -1,11 +1,11 @@
 import gradio as gr
 from huggingface_hub import InferenceClient
-from langchain.document_loaders import PyPDFLoader
+from langchain_community.document_loaders import PyPDFLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
 from sentence_transformers import SentenceTransformer
 from langchain.chains import RetrievalQA
-from langchain.llms import HuggingFaceHub
+from langchain_community.llms import HuggingFaceHub
 
 # Load the PDF document
 loader = PyPDFLoader("apexcustoms.pdf")