Liquid error: Solution::ArticleMeta#visible? delegated to solution_folder_meta.visible?, but solution_folder_meta is nil: #<Solution::ArticleMeta id: 44002289552, position: 1, art_type: 1, thumbs_up: 6, thumbs_down: 8, hits: 300, solution_folder_meta_id: 44001233996, account_id: 1107830, created_at: "2021-12-07 12:29:13", updated_at: "2022-12-02 18:37:43", available: "2147483680", draft_present: "0", published: "2147483680", outdated: "0">