paper-datatable-card not working in polymer 3

[sonuyadav7421]

setData(idProp) {
if (!idProp) idProp = "_id";
return {
queryForIds: (sort, page, pageSize) => {
return this.select(this.data, '_id', this.searchTerm, sort, (page - 1) *
pageSize, page * pageSize, idProp);
},
getByIds: (ids) => {
return this.select(this.data, '*', ids, null, null, null, idProp);
},
set: (item, property, value) => {
return this.update(item._id, property, value);
},
length: 0
}
}

In above code function getByIds always return undefined. Please find attached console result for the same.