Hallo, hoe kunnen we u helpen?

Liquid error: Solution::ArticleMeta#visible? delegated to solution_folder_meta.visible?, but solution_folder_meta is nil: #<Solution::ArticleMeta id: 150000014463, position: nil, art_type: 1, thumbs_up: 0, thumbs_down: 0, hits: 0, solution_folder_meta_id: 150000538279, account_id: 2504098, created_at: "2022-10-20 14:42:33", updated_at: nil, available: nil, draft_present: nil, published: nil, outdated: nil>