The number of followers is displayed, but no user information is displayed

The problem is that when I want to display, for example, the last 10 logged-in users on the site, I can’t do it, because the data field is empty

Not sure how logged in users pertains to followers.

But the followers API to get data from it requires a moderator or broadcaster user token to fetch that data with the stated scope.

Otherwise only the total is returned. And since this needs a token with permissions your backend wants to be doing the fetching in order to protect that token