折旧调整单生成凭证报错

折旧调整单生成凭证报错

上个月还是可以生成凭证的，这个月生成凭证就报错了。

Value cannot be null.
Parameter name: 表达式为空

at Kingdee.BOS.Scripting.PyExpressionEvaluator.Run(Expression expression, ExpressionContext context)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.TplCompile.TplCompiler.b__f(Dictionary`2 dctFieldProperties, DynamicObject sourceRow)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.MappingHelper.MappingVoucherGroupNo.MappingValue(DynamicObject sourceRow, BizVchHeader vchHeader, BizVchEntryRow vchEntryRow)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildVoucherLogic.BuildVoucherHeader.SetRuleFieldValue(BizVchHeader bizVchHeader)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildVoucherLogic.BuildVoucherHeader.DoAction()
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildBizVoucherAction.DoOneSourceBill(BuildSingleVoucherResult buildResult)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildBizVoucherAction.DoBatch(List`1 currBatchBillIds)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildBizVoucherAction.DoAction()
at Kingdee.BOS.Core.BusinessPolicyModel.BusinessPolicyEngine.Do(OperateOption context)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherEngine.DoEveryTemplate(VchSelectBookInfor book, VchSelectSourceBillInfor sourceBill, VCHTemplateInfor vchTemplate, BuildResultManager resultManager, Int32 logBootLevel)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherEngine.DoEverySourceBill(VchSelectBookInfor book, VchSelectSourceBillInfor sourceBill, Int32& iBill)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherEngine.BuildVoucher(BizVchMakeSchemeInfor buildVoucherScheme)
at Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherService.BuildVoucher(Context ctx, BizVchMakeSchemeInfor buildVoucherScheme)
at Kingdee.K3.FIN.ServiceHelper.VoucherGenerateServiceHelper.VoucherGenerate(Context ctx, BizVchMakeSchemeInfor bookInfoLst)
at Kingdee.K3.FIN.Business.PlugIn.GL.VoucherGeneServiceEdit.GenerateVoucher()