No route matches {:action=>"download", :controller=>"arxiusconv", :convocatoria_id=>#<Convocatoria id: 8422, create_date: "2021-09-22 08:19:35", type_id: 2, ordre: 0, write_uid: 55, visible: true, external_code: nil, destacar: false, date_entrega_esborrany: nil, entitat_convocant: 38935, create_uid: 61, title: "III Ajuda de Recerca en Oncologia ASEICA + QUEUNTRA...", message_last_post: nil, date_entrega_eoi: nil, otherid: 0, date_entrada: "2021-09-23", publicat: false, date_caducitat_interna: "2021-10-04", write_date: "2021-09-23 10:18:44", internal_code: 14703, date_caducitat_externa: "2021-10-11", multiples_acabaments: false, actiu: 0, code_sirecs: nil>, :id=>#<OdooAttachment >}
Try running rake routes for more information on available routes.