A form was submitted in the %S encoding which cannot encode all Unicode characters, so user input may get corrupted. To avoid this problem, the page should be changed so that the form is submitted in the UTF-8 encoding either by changing the encoding of the page itself to UTF-8 or by specifying accept-charset=utf-8 on the form element.
Chaidh foirm a chur sa chòdachadh %S agus cha ghlèidh sin gach caractar Unicode agus faodaidh gum bi teacsa a chuireas daoine a-steach 'na bhrochan. Gus nach tachair seo, bu chòir gun dèid an duilleag seo atharrachadh gus an cuir e foirmean sa chòdachadh UTF-8 le bhith ag atharrachadh còdachadh na duilleige fhèin ann an UTF-8 no le bhith a' sònrachadh accept-charset=utf-8 ann an eileamaid an fhoirm.