404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fdata.bnf.fr%2Fen%2F16765364%2Fbaldassare_galuppi_il_mondo_della_luna__acte_2__sinfonia__sol_majeur%2F&title=Il+mondo+della+luna.+Acte+2.+Sinfonia.+Sol+majeur was not found on this server. That’s all we know.