Update main.py

main.py

@@ -50,7 +50,7 @@ def create_sentiment_result(sentiment_result: schemas.SentimentResultCreate,text
         db.commit()
         db.refresh(new_sentiment_result)
         # Convert datetime objects to strings
-        created_at_str = new_sentiment_result.createdAt.strftime("%Y-%m-%dT%H:%M:%SZ")
+        created_at_str = new_sentiment_result.created_at.strftime("%Y-%m-%dT%H:%M:%SZ")
         textinput_dict = {
              "id": new_user.id,
              "text_input": new_sentiment_result.text_input,