fix: add missing imports

main.py

@@ -27,6 +27,13 @@ def index() -> FileResponse:
 
 
 
+import re
+import torch
+from transformers import DonutProcessor, VisionEncoderDecoderModel
+from datasets import load_dataset
+import os
+from PIL import Image
+
 
 # Doc classifier model
 classifier_doctype_processor = DonutProcessor.from_pretrained("calumpianojericho/donutclassifier_acctdocs_by_doctype")