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Liquid error: Solution::ArticleMeta#visible? delegated to solution_folder_meta.visible?, but solution_folder_meta is nil: #<Solution::ArticleMeta id: 36000084307, position: 44, art_type: 1, thumbs_up: 1, thumbs_down: 2, hits: 936, solution_folder_meta_id: 36000290022, account_id: 859387, created_at: "2018-09-10 03:25:59", updated_at: "2025-03-14 14:40:01", available: "2113712", draft_present: "0", published: "2113712", outdated: "0">