restore missing dependencies

captioning_service.py

@@ -11,6 +11,9 @@ from dataclasses import dataclass
 from datetime import datetime
 import cv2
 import copy
+
+from llava.model.builder import load_pretrained_model
+from llava.mm_utils import tokenizer_image_token
 from llava.constants import IMAGE_TOKEN_INDEX, DEFAULT_IMAGE_TOKEN, DEFAULT_IM_START_TOKEN, DEFAULT_IM_END_TOKEN
 from llava.conversation import conv_templates, SeparatorStyle