总账凭证保存不了

大家有木有碰到月末31号的时候 凭证保存不了、 提示错误

[{"operation":"GL_VOUCHER.MBIClick.tbSplitSave"}]
发生时间： 10:39:12
错误编号： 392777c1be7044028af5cf3d0c0758ed
错误信息： 未将对象引用设置到对象的实例。
===================================================
调用堆栈：

Server stack trace:
在 Kingdee.K3.FIN.GL.App.ServicePlugIn.GLVoucher.SaveValidator.CheckDatePeriod(Int32 iYear, Int32 iPeriod, DateTime dt)
在 Kingdee.K3.FIN.GL.App.ServicePlugIn.GLVoucher.SaveValidator.CheckVouchrPeriod()
在 Kingdee.K3.FIN.GL.App.ServicePlugIn.GLVoucher.SaveValidator.Validate(ExtendedDataEntity[] dataEntities, ValidateContext validateContext, Context ctx)
在 Kingdee.BOS.App.Core.Validation.ValidationService.Validate(IEnumerable`1 dataEntities, ValidateContext validateContext, AbstractValidator[] validators)
在 Kingdee.BOS.App.Core.Validation.ValidationService.TryValidate(IEnumerable`1 dataEntities, ValidateContext validateContext, List`1& errorInfo)
在 Kingdee.BOS.App.Core.AbstractOprerationService.TryValidate()
在 Kingdee.BOS.App.Core.AbstractOprerationService.Validate()
在 Kingdee.BOS.App.Core.AbstractSave.Validate()
在 Kingdee.BOS.App.Core.AbstractOprerationService.DoExcete()
在 Kingdee.BOS.App.Core.AbstractOprerationService.Excute(DynamicObject[] dataEntities)
在 Kingdee.BOS.App.Core.SaveService.Save(Context ctx, BusinessInfo info, DynamicObject[] dataEntities, OperateOption option, String operationNumber)

Exception rethrown at [0]:
在 Kingdee.BOS.ServiceHelper.BusinessDataServiceHelper.Save(Context ctx, BusinessInfo businessInfo, DynamicObject dataObject, OperateOption option, String operationNumber)
在 Kingdee.BOS.Model.Bill.BillModel.Save(OperateOption option)
在 Kingdee.BOS.Business.Bill.Operation.Save.ExecuteBillOperation(OperateOption option)
在 Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Operation(CallBackWfAfterOperation callbackwf, IOperationResult result)
在 Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Execute(InvokeFormOperation4WfParam param, CallBackWfAfterOperation callbackwf)
在 Kingdee.BOS.Web.DynamicForm.OperationCaller.InvokeFormOperation(String operationNumber)
在 Kingdee.BOS.Business.DynamicForm.BusinessService.ExcuteOperation.DoAction(FormBusinessServiceArgs e)
在 Kingdee.BOS.Core.DynamicForm.FormBusinessServiceUtil.InvokeServices(IDynamicFormView view, Object source, IEnumerable`1 services, Int32 actionType, String activeEntity, DynamicObject activeRow, Int32 rowIndex)
在 Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.InvokeFormBusiness(IDynamicFormView view, Object source, List`1 formBusinessServices, Int32 actionType, String entityKey, Int32 row)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.BarItemClick(String parentKey, String barItemKey, BarDataManager bar, Int32 bartype)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.MainBarItemClick(String barItemKey)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.MainBarItemClick(String itemKey, JSONArray postDatas)