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.
有一使用 %S 编码提交的表单，无法对所有 Unicode 字符进行编码，可能导致用户所输入的内容发生错误。为避免此问题，请将页面本身的编码更改为 UTF-8，或在 form 元素上指定 accept-charset=utf-8，最终以 UTF-8 编码提交表单。