fix

app/views/topics/_pinned_forum.json.jbuilder

@@ -1,4 +1,4 @@
 json.(pinned_forum, :id, :title, :url)
-request_memo = Forum::Memos::GetService.call(experience_forum&.uuid)
+request_memo = Forum::Memos::GetService.call(pinned_forum&.uuid)
 json.visits request_memo.nil? ? 0 : request_memo["memo"]["viewed_count"]
 json.created_time request_memo.nil? ? format_time(Time.now) : request_memo["memo"]["published_time"]