Update app.py

app.py

@@ -10,6 +10,8 @@ from doctr.io import DocumentFile
 from doctr.models import ocr_predictor
 from pypdf import PdfReader
 from PIL import Image
+from utils import extract_images, image_to_bytes, clean_text
+from welcome_text import WELCOME_INTRO
 import chromadb
 from chromadb.utils import embedding_functions
 from langchain.text_splitter import RecursiveCharacterTextSplitter