404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fdata.bnf.fr%2Fen%2Ftemp-work%2F790e00488f68687ba486a4dee891f762%2F&title=Le+bonheur+et+autres+id%C3%A9es was not found on this server. That’s all we know.