Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 from langchain.vectorstores import Chroma
-from langchain_community.document_loaders import PyPDFLoader
-from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain.document_loaders import PyPDFLoader
+from langchain.embeddings import HuggingFaceEmbeddings
 from transformers import LayoutLMv3Processor, AutoModelForTokenClassification
 from langchain.chains import RetrievalQA
 from langchain.prompts import PromptTemplate