EUN causing an issue in Tariff and Trade Analysis

[William Peregoy]

Within the Tariff and Trade Analysis option within the Advanced Query, I'm not able to get any data on the European Union (EUN), if I include EUN as a reporter in my selected countries, the query doesn't run, and returns "no data" no matter even if other countries are included in the query or not. 

This seems to be a bug, as even if the data for EUN was unavailable, the query should still run for other selected countries - but it does not. 

The data source I'm selecting is WTO IDB.

Aare you able to take a look into this and see what is the problem/cause here? Is it something that can be rectified easily?