Why is paginate() not working in laravel?

Question

Laravel

Paginate doesn't work, throws error Trying to get property 'username' of non-object

Code in controller:

public function users() {
$users = DB::connection('mysql_usersData')->table('users')->paginate(4);
$usersList = collect($users);
return view('admin.users',['usersList' => $usersList->sortBy('username')]);
}