Stacked bar chart is not working

Zeppelin Notebook's Bar Chart is not working with like below data:

print("%table role country count\nEdit DE 174\nArt DE 85\nProduction Supervisor DE 5\nDirector SE 1\nShooting DE 184\nStunt DE 2\nDirector NO 9\nActor DE 40571\nSpecial effects DE 5\nDirector GB 66\nCasting DE 71\nActor GB 375\nDirector IT 316\nRecording DE 83\nDirector FR 38\nDirector IE 1054\nDirector ES 158\nMusic DE 188\nArtistic Director DE 47\nDirector AT 21\nDirector BE 174\nActor IT 2644\nActor DK 12953\nActor ES 1366\nDirector CH 46\nMaking DE 8\nDirector NL 53\nActor FI 1605\nActor FR 467\nActor SE 12\nDirector PT 114\nProduction Designer DE 79\nDirector FI 201\nDirector DE 5676\nActor IE 7906\nDirector LU 158\nActor BE 1303\nCostumes DE 75\nActor AT 118\nActor PT 871\nActor NL 427\nProducer DE 877\nMakeup DE 6\nActor CH 416\nActor LU 1150\nDirector DK 1699\nActor NO 95")

1. Run paragraph
2. Select bar chart
3. "role" to Keys, "country" to Groups
4. Select Stacked.

Then bar chart will not work properly.