improve error message @ server
improve error message @ server

wataash/Karabiner,wataash/Karabiner,miaotaizi/Karabiner,astachurski/Karabiner,chzyer-dev/Karabiner,e-gaulue/Karabiner,chzyer-dev/Karabiner,runarbu/Karabiner,tekezo/Karabiner,runarbu/Karabiner,wataash/Karabiner,muramasa64/Karabiner,astachurski/Karabiner,chzyer-dev/Karabiner,runarbu/Karabiner,wataash/Karabiner,chzyer-dev/Karabiner,e-gaulue/Karabiner,astachurski/Karabiner,tekezo/Karabiner,runarbu/Karabiner,muramasa64/Karabiner,e-gaulue/Karabiner,tekezo/Karabiner,astachurski/Karabiner,e-gaulue/Karabiner,miaotaizi/Karabiner,miaotaizi/Karabiner,miaotaizi/Karabiner,muramasa64/Karabiner,muramasa64/Karabiner,tekezo/Karabiner