Update app.py

app.py

@@ -21,7 +21,7 @@ from langchain_experimental.open_clip.open_clip import OpenCLIPEmbeddings
 from io import BytesIO
 from pathlib import Path
 import os
-from utils.block_relation_builder import block_builder, variable_adder_main
+from utils.block_relation_builder_v1 import block_builder, variable_adder_main
 global pdf_doc
 # ============================== #
 #     INITIALIZE CLIP EMBEDDER   #