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.
Formular je so w kodowanju %S pósłał, kotrež njemóže wšě Unicode-znamješka kodować, tohodla móhło zapodaće wužiwarja wobškodźene być. Zo by so tutón problem wobešoł, měła so strona změnić, tak zo formular so w kodowanju UTF-8 wotpósćele, pak přez to, zo změniće kodowanje strony do UTF-8 pak přez to, zo podaće accept-charset=utf-8 na formularnym elemenće.