Send actual error message out about notebook
Send actual error message out about notebook

AlfiyaZi/nbviewer,imsparsh/nbviewer,Sage-Bionetworks/nbviewer,christophelec/nbviewer,Jay-Oh-eN/nbviewer,thomasyu888/nbviewer,roxyboy/nbviewer,Jay-Oh-eN/nbviewer,imsparsh/nbviewer,christophelec/nbviewer,iamjakob/nbviewer,roxyboy/nbviewer,AlfiyaZi/nbviewer,Sage-Bionetworks/nbviewer,iamjakob/nbviewer,bollwyvl/nbviewer,bollwyvl/nbviewer,thomasyu888/nbviewer