Add FastAPI import and update unauthorized response

main.py

@@ -12,6 +12,7 @@ from huggingface_hub import CommitScheduler, HfApi, whoami
 from huggingface_hub.utils._errors import HTTPError
 from pydantic import BaseModel, Field
 from starlette.responses import RedirectResponse
+from fastapi import FastAPI, HTTPException, status
 
 load_dotenv()
 
@@ -89,8 +90,10 @@ async def receive_vote(
 ):
     token = authorization.split(" ")[1]
     if not validate_token(token):
-        # Return a not authorized response
-        return {"message": "Not authorized"}
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid user token.",
+        )
     vote_entry = {
         "dataset": vote.dataset,
         "vote": vote.vote,