Update main.py

main.py

@@ -2,7 +2,7 @@ from fastapi import FastAPI, UploadFile, File, Form, HTTPException
 from fastapi.responses import JSONResponse, FileResponse
 from fastapi.openapi.utils import get_openapi
 from fastapi.openapi.docs import get_swagger_ui_html
-from typing import Optional, List, Union, Union, Union
+from typing import Optional, List, Union,
 from enum import Enum
 import os
 import uuid