Improved error handling with invalid mode configs
Improved error handling with invalid mode configs

haakondr/svg-sprite,clloyd/svg-sprite,jkphl/svg-sprite,2947721120/svg-sprite,haakondr/svg-sprite,panych/svg-sprite,clloyd/svg-sprite,panych/svg-sprite,2947721120/svg-sprite,jkphl/svg-sprite