improved error message
improved error message

rudy500/otrs,xhoy/otrs,MBRG/otrs,moritz/otrs,PortgasDAce/otrs,oiami/otrs,eliasp/otrs,vlascoder/otrs,StCyr/otrs,linearregression/otrs,balazj/otrs,xhoy/otrs,s7design/otrs,s7design/otrs,brandonshults01/otrs,muehlbauer/otrs,oiami/otrs,mburggraf/otrs,brandonshults01/otrs,MBRG/otrs,PortgasDAce/otrs,capeit-tto/otrs,MBRG/otrs,muehlbauer/otrs,xhoy/otrs,eliasp/otrs,oiami/otrs,oiami/otrs,moritz/otrs,balazj/otrs,s7design/otrs,muehlbauer/otrs,rudy500/otrs,rudy500/otrs,noritnk/otrs,balazj/otrs,vlascoder/otrs,nilei/otrs,StCyr/otrs,linearregression/otrs,crythias/otrs,s7design/otrs,PortgasDAce/otrs,muehlbauer/otrs,thorsteneckel/otrs,moritz/otrs,nilei/otrs,mburggraf/otrs,xhoy/otrs,rudy500/otrs,crythias/otrs,moritz/otrs,StCyr/otrs,linearregression/otrs,MBRG/otrs,brandonshults01/otrs,crythias/otrs,balazj/otrs,MBRG/otrs,thorsteneckel/otrs,linearregression/otrs,StCyr/otrs,rudy500/otrs,vlascoder/otrs,mburggraf/otrs,thorsteneckel/otrs,StCyr/otrs,eliasp/otrs,moritz/otrs,crythias/otrs,crythias/otrs,nilei/otrs,thorsteneckel/otrs,capeit-tto/otrs,mbeijen/otrs-1,noritnk/otrs,mbeijen/otrs-1,mburggraf/otrs,eliasp/otrs,s7design/otrs,xhoy/otrs,nilei/otrs,PortgasDAce/otrs,balazj/otrs,mbeijen/otrs-1,thorsteneckel/otrs,brandonshults01/otrs,noritnk/otrs,nilei/otrs,brandonshults01/otrs,capeit-tto/otrs,eliasp/otrs,PortgasDAce/otrs,oiami/otrs,muehlbauer/otrs,mburggraf/otrs,linearregression/otrs