Can get older posts on latest posts page

lib/ui/screens/newest_posts.dart

@@ -20,6 +20,7 @@ class _NewestPostsScreenState extends State<NewestPostsScreen> {
   Widget build(BuildContext context) {
     return PostsListWidget(
       getPostsList: _postsHelper.getLatest,
+      getOlder: (f) => _postsHelper.getLatest(from: f - 1),
       showPostsTarget: true,
     );
   }