Hotfix NoMethodError: Error creating visualization
Hotfix NoMethodError: Error creating visualization

See R/B 23886. It should be duplicating a visualization. I tried to
reproduce the issue in staging but I couldn't. This should be an extra
sanity check.

CartoDB/cartodb,splashblot/dronedb,CartoDB/cartodb,splashblot/dronedb,CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,CartoDB/cartodb,splashblot/dronedb,splashblot/dronedb