导出页面到EXECL时提示错误求指导

Lay.Li

在执行导出操作时，未知的异常出现。请再次尝试。
{
  "ClassName": "System.ArgumentOutOfRangeException",
  "Message": "Specified argument was out of the range of valid values.",
  "Data": null,
  "InnerException": null,
  "HelpURL": null,
  "StackTraceString": " at GrapeCity.Documents.Excel.va.get_Item(String name)
at Forguncy.Server2.Controllers.a.a(PivotTableCellType A_0, IPivotTable A_1)
at Forguncy.Server2.Controllers.a.a(GcExcelSheetWrapper A_0, PivotTableCellType A_1, IRange A_2, String A_3, IPivotCache A_4)
at Forguncy.Server2.Controllers.a.c()
at Forguncy.Server2.Controllers.a.b(Boolean A_0)
at Forguncy.Server2.Controllers.a.c(Boolean A_0)
at Forguncy.Server2.Controllers.a.i()
at Forguncy.Server2.Controllers.HomeController.a(Object A_0)",
  "RemoteStackTraceString": null,
  "RemoteStackIndex": 0,
  "ExceptionMethod": null,
  "HResult": -2146233086,
  "Source": "GrapeCity.Documents.Excel",
  "WatsonBuckets": null,
  "ParamName": null,
  "ActualValue": null
}

CurrentMethodName: ExportToExcelThread