Completion fails for some series - Error 500 in API
https://db.nomics.world/ECB/CISS returns a 500 error in UI
Tasks
- 
fix the problem  - 
answer to the user that reported the issue (email to contact@nomics.world)  
Edited  by Christophe Benz
https://db.nomics.world/ECB/CISS returns a 500 error in UI