The unsubscription is not successful.

Error message is :
:11:-2147352567:31:Method '~' of object '~' failed:0::0::11:-2147352567:31:Method '~' of object '~' failed:194:START: VBErrorInfo Description: Method '~' of object '~' failed HelpContext: 1000440 HelpFile: LastDllError: 0 Number: -2147352567 (0x80020009) Source: Agent_BUS END: VBErrorInfo :322:START: AppInfo ComputerName: PAZ02HTP3646 Operating System: Unknown_OS PlatformID:2 6.1.7601 (Service Pack 1) Time: Sat 2017:12:16 22:51:15 Title: Agent_BUS EXEName: Agent_BUS Path: D:\Components\TPO Components Version: 15.70.1 Unattended: True Retained: True StartMode: 1 Thread: 464 END: AppInfo :337:START: ContextInfo IsInTransaction: True ContextInfo.ActivityId: {4F63D705-473A-470C-9A7E-E1D5C604D21A} ContextInfo.ContextId: {8F606D6B-6BC9-43DF-9820-D831768E971C} ContextInfo.IsInTransaction: True ContextInfo.TransactionId: {16347E58-0972-48EC-9FB9-A2C2E1025196} IsSecurityEnabled: False ItemCount: 5 END: ContextInfo :38:START: ADODBErrors END: ADODBErrors :1:0:176:VB Error Source: Agent_BUS ** Computer: PAZ02HTP3646 App Path: D:\Components\TPO Components\Agent_BUS Filename: Contact_RW Function: UpdateContactEmailSubscriptionStatus: