Why is my material rendering black?

Yet another newbie material not rendering question. I apologize, but I’ve due-diligenced myself to death looking for the solution.

I couldn’t solve this problem in my actual model, so I’ve set up a bare test model that consists only of the cube present by default in a new model.

I’ve set the material as a reflective metallic object, as shown in the Material Preview.

I’ve put both a light in the scene, as well as an HDR environment to have something to reflect.

The rendered image shows just like the preview in the upper window.