MailWizzApi_Params Object
(
    [_data:MailWizzApi_Params:private] => Array
        (
            [status] => error
            [error] => Array
                (
                    [general] => Array
                        (
                            [birthDate] => Birth date cannot be blank.
                        )

                )

        )

    [_readOnly:MailWizzApi_Params:private] => 
)