Proper error instead of assert.
Proper error instead of assert.

vdumoulin/fuel,orhanf/fuel,dmitriy-serdyuk/fuel,rodrigob/fuel,mila-udem/fuel,mjwillson/fuel,harmdevries89/fuel,udibr/fuel,dmitriy-serdyuk/fuel,capybaralet/fuel,aalmah/fuel,hantek/fuel,codeaudit/fuel,dribnet/fuel,aalmah/fuel,dhruvparamhans/fuel,janchorowski/fuel,capybaralet/fuel,glewis17/fuel,hantek/fuel,dwf/fuel,udibr/fuel,harmdevries89/fuel,bouthilx/fuel,janchorowski/fuel,rodrigob/fuel,codeaudit/fuel,glewis17/fuel,markusnagel/fuel,chrishokamp/fuel,dribnet/fuel,bouthilx/fuel,chrishokamp/fuel,markusnagel/fuel,mila-udem/fuel,vdumoulin/fuel,dhruvparamhans/fuel,mjwillson/fuel,orhanf/fuel,dwf/fuel