Working on a project that was rendering fine for many iterations. Something happened and now it just renders black. None of the likely causes listed here is the issue, https://gachokistudios.com/why-a-blender-render-result-is-completely-blank-or-black-and-how-to-fix-it/ Not finding anything on this site either. Things went weird when I had Joined a number of objects and suffered huge memory bloat, so the offending objects were then deleted. File size is back to normal but I cannot render the image.
I have an HDRI lighting setup and a spotlight. All layers are ON for render. Looks fine when rendered in viewport. To speed it up I am just rendering a small region but same results with entire image. Just black when rendered