add http exception import

main.py

@@ -1,4 +1,4 @@
-from fastapi import FastAPI, File, UploadFile
+from fastapi import FastAPI, File, UploadFile, HTTPException, status
 from PIL import Image
 from fastapi.middleware.cors import CORSMiddleware
 from rapidocr_onnxruntime import RapidOCR

test.py

@@ -4,6 +4,7 @@ from openai import OpenAI
 base_url = "https://maas.hikvision.com.cn/v1"
 api_key = "sk-20f1cbcdae0e4b789ee06923c201d6a8"
 
+
 client = OpenAI(base_url=base_url, api_key=api_key)
 response = client.chat.completions.create(
     model="gpt-oss-120b",