Merge pull request #31 from user00144/develop

fix

Author: user00144

services/hw_services/device_service.py

@@ -43,5 +43,5 @@ async def save_description_to_firestore(
         "question_text": question_text,
         "gpt_response": gpt_response,
         "is_emergency": is_emergency,
-        "updated_at": str(datetime.utcnow().isoformat() + timedelta(hours=9))
+        "updated_at": datetime.utcnow() + timedelta(hours=9)
     })