Error when clicking on matrix aggregation

[NMO13]

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• Web browser version and OS:
• Environment (local or deployed):

Steps to reproduce

1. Click on AIDS_Countries
2. Add "AIDS related deaths"
3. Select attribute "Decades" in "AIDS_Years"
4. Aggregate matrix by min

Observed behavior

The console log says: app.js:1 Uncaught (in promise) TypeError: Cannot read property 'id' of undefined at https://taggle-daily.caleydoapp.org/app.js:1:306400 at Array.forEach (native) at https://taggle-daily.caleydoapp.org/app.js:1:306329 at Array.forEach (native) at e.updateAggregationLevelForRow (https://taggle-daily.caleydoapp.org/app.js:1:306286) at e. (https://taggle-daily.caleydoapp.org/app.js:1:303542) at r (https://taggle-daily.caleydoapp.org/app.js:1:1156) at Object.next (https://taggle-daily.caleydoapp.org/app.js:1:491) at https://taggle-daily.caleydoapp.org/app.js:1:425 at Promise () 

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Expected behavior

• No error in console log