It says:
I code exactly like yours
And the json file i downloaded directly from the introdction
landmarkData.json
MinhQuang
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
I already checked
but still
Here is what I made so far