404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fdata.bnf.fr%2Fen%2F17072410%2Fjackye_alvares-hallot%2F&title=Jackye+Alvar%C3%A8s-Hallot was not found on this server. That’s all we know.