客户CLUOD版本为6.1,打了为4月的补丁，从昨天开始出现应付单反审核报错的问题，报错内容如下
错误内容：
访问服务器时发生错误，
错误提示：The remote server returned an error: (500) Internal Server Error.，
URL地址：[http://localhost/K3CloudApp/Kingdee.BOS.ServiceFacade.ServicesStub.Computing.BackAppService.GetTask.common.kdsvc]
{"operation":"AP_Payable_List.MBIClick.tbReject"}]
发生时间：09:01:33
错误来源： Kingdee.BOS.ServiceHelper
错误信息：访问服务器时发生错误，
错误提示：The remote server returned an error: (500) Internal Server Error.，
URL地址：[http://localhost/K3CloudApp/Kingdee.BOS.ServiceFacade.ServicesStub.Computing.BackAppService.GetTask.common.kdsvc]
===================================================
调用堆栈：
Server stack trace:
at Kingdee.BOS.ServiceFacade.KDServiceClient.KDServiceClient.DoPost(KDBaseRequest kdrequest)
at Kingdee.BOS.ServiceFacade.KDServiceClient.KDServiceClient.Execute[T](KDBaseRequest request)
at Kingdee.K3.FIN.App.Core.Match.MatchProcess.MatchNetworkControl(Context ctx, List`1 settOrgs, String matchType)
at Kingdee.K3.FIN.App.Core.Match.MatchProcess.NetworkControl(Context ctx, List`1 settOrgs, String matchType)
at Kingdee.K3.FIN.App.ServicePlugIn.Match.NetControlUnditValidate.Validate(ExtendedDataEntity[] dataEntities, ValidateContext validateContext, Context ctx)
at Kingdee.BOS.App.Core.Validation.ValidationService.Validate(IEnumerable`1 dataEntities, ValidateContext validateContext, AbstractValidator[] validators)
at Kingdee.BOS.App.Core.Validation.ValidationService.TryValidate(IEnumerable`1 dataEntities, ValidateContext validateContext, List`1& errorInfo)
at Kingdee.BOS.App.Core.AbstractOprerationService.TryValidate()
at Kingdee.BOS.App.Core.AbstractOprerationService.Validate()
at Kingdee.BOS.App.Core.SetStatus.Validate()
at Kingdee.BOS.App.Core.AbstractOprerationService.DoExcete()
at Kingdee.BOS.App.Core.AbstractOprerationService.Excute(Object[] ids)
at Kingdee.BOS.App.Core.AbstractSetStatus.Excute(Object[] ids)
at Kingdee.BOS.App.Core.SetStatusService.SetBillStatus(Context ctx, BusinessInfo businessInfo, List`1 pkEntryIds, List`1 paras, String operationNumber, OperateOption option)
Exception rethrown at [0]:
at Kingdee.BOS.ServiceHelper.BusinessDataServiceHelper.SetBillStatus(Context ctx, BusinessInfo businessInfo, List`1 pkEntryIds, List`1 paras, String operationNumber, OperateOption option)
at Kingdee.BOS.Business.Bill.Operation.AbstractStatusConvert.BatStatusConvert(Int32 loopTimes, Int32 iBat, Object[] ids, List`1 paras)
at Kingdee.BOS.Business.Bill.Operation.AbstractStatusConvert.ExecuteStatusConvert(List`1 paras)
at Kingdee.BOS.Business.Bill.Operation.UnAudit.UnAuditIdeaPrompt()
at Kingdee.BOS.Business.Bill.Operation.UnAudit.ExecuteOperation()
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Operation(CallBackWfAfterOperation callbackwf, IOperationResult result)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Execute(InvokeFormOperation4WfParam param, CallBackWfAfterOperation callbackwf)
at Kingdee.BOS.Web.DynamicForm.AbstractDynamicWebFormView.InvokeFormOperation(String operationNumber)
at Kingdee.BOS.Business.DynamicForm.BusinessService.ExcuteOperation.DoAction(FormBusinessServiceArgs e)
at Kingdee.BOS.Core.DynamicForm.FormBusinessServiceUtil.InvokeServices(IDynamicFormView view, Object source, IEnumerable`1 services, Int32 actionType, String activeEntity, DynamicObject activeRow, Int32 rowIndex)
at Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.InvokeFormBusiness(IDynamicFormView view, Object source, List`1 formBusinessServices, Int32 actionType, String entityKey, Int32 row)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.BarItemClick(String parentKey, String barItemKey, BarDataManager bar, Int32 bartype)
at Kingdee.BOS.Web.List.ListView.MainBarItemClick(String barItemKey)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.MainBarItemClick(String itemKey, JSONArray postDatas)
错误数据： System.Collections.ListDictionaryInternal