404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fdata.bnf.fr%2Ffr%2F16871844%2Fmarguerite-louise-amelie_du_ronceray_couple_amoureux_vetu_a_la_turque__sous_une_tonnelle%2F&title=Couple+amoureux+v%C3%AAtu+%C3%A0+la+turque%2C+sous+une+tonnelle was not found on this server. That’s all we know.