better error message
better error message

magnus-lycka/gomatic,jimarnold/gomatic,beano/gomatic,magnus-lycka/gomatic,Backbase/gomatic,marcinwalczyk/gomatic,marcinwalczyk/gomatic,jimarnold/gomatic,SpringerSBM/gomatic,SpringerSBM/gomatic,beano/gomatic,Backbase/gomatic