stata数据导入Excel报错

use E:tradedata_2013_1_1

. export excel using "E:\导出1.xlsx", firstrow(variables)
      _xlshwritestrcol():  9901  Stata returned error
export_excel_write_file():     -  function returned error
export_excel_export_file():     -  function returned error
                 <istmt>:     -  function returned error
r(9901);

尝试将xls,改成xlsx但还是报错，有大佬可以指点一下吗