handle validation errors in pool._start_render
handle validation errors in pool._start_render

kmike/splash,dwdm/splash,sunu/splash,pawelmhm/splash,kod3r/splash,kmike/splash,kod3r/splash,Youwotma/splash,kmike/splash,pombredanne/splash,pawelmhm/splash,dwdm/splash,sunu/splash,kod3r/splash,dwdm/splash,pombredanne/splash,pawelmhm/splash,sunu/splash,Youwotma/splash,Youwotma/splash,pombredanne/splash