Update main.py

main.py

@@ -1,7 +1,7 @@
 import tempfile
 import os
 import json
-from fastapi import FastAPI, UploadFile, File, HTTPException, BackgroundTasks
+from fastapi import FastAPI, Request, HTTPException, UploadFile, File, BackgroundTasks
 from fastapi.concurrency import run_in_threadpool
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel, Field