Why was this question closed? The "duplicate post" does not have any relation to my post [duplicate]

So I asked this question on Stack Overflow. Within 5 minutes, somebody posted a comment, deleted it, and closed my post. This other post that was the "duplicate" of my post is not even using the same module as I was, and it was about not using the latest version of Google Chrome, and my code never did that. Why was this closed?? This is completely unfair and not useful for my question getting answered.