Interface display error.

Hi,

Seeing the following error:

Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error in rule 'adv_getaddresses' at function 'type!{urn:com:appian:types:ADV}ADV_Address' (invalid) [line 23]: Invalid function 'type!{urn:com:appian:types:ADV}ADV_Address' due to invalid type

a!localVariables(
  local!locationsList: rule!ADV_getAddresses(addressId:NULL),
{
  a!sectionLayout(
    label: "Address",
    contents: {
      a!radioButtonField(
        label: "Radio Buttons",
        labelPosition: "COLLAPSED",
        choiceLabels:
            a!forEach(
              items: local!locationsList,
              expression: fv!item.shippingAddress  & " " & 
              if(isnull(fv!item.unitNumber), null,"Unit#"& fv!item.unitNumber)
              & " " & fv!item.city & " , " & fv!item.stateOrProvince
              & " " & fv!item.postalCode
             ),
        choiceValues: local!locationsList,
        saveInto: {},
        choiceLayout: "STACKED",
        validations: {}
      )
    }
  )
}
)

It calls an Expression Rule, which is as following:

a!localVariables(
  local!queryResults: a!queryEntity_18r3(
    entity: cons!ADV_DSE_ADDRESS,
    query: a!query(
      paginginfo: a!pagingInfo(1, - 1),
      logicalExpression: a!queryLogicalExpression(
        operator: "AND",
        ignoreFiltersWithEmptyValues: true,
        filters: {
          a!queryFilter(
            field: "addressId",
            operator: "in",
            value: ri!addressId
          ),
          
        }
      )
    )
  ).data,
  cast(
    typeof(
      {
        'type!{urn:com:appian:types:ADV}ADV_Address'()
      }
    ),
    local!queryResults
  )
)

What could be the issue in the code?  Pls kindly help!!

Thanks,
Suneetha.