Arnold Rendering Bug


Hello um, I have been using Arnold for my animation projects such as Eric & Girl (Short Film) but there is one little problem. sometimes when clicking batch render, render sequence or the render button next to IPR it doesn’t seem to work right I mean it doesn’t render a single pixel. I tried removing some models but that didn’t work. but the confusing part is on the other projects I have, it works. this has happened to me twice so is there any way to fix this bug or move on to a different renderer? here’s an image of the problem.