Basic cube has Degenerate Polygons

New user using Blender.

I make a simple box by first creating a plane, then extruding it, then export as .fbx. When I import into UE, I get a failed message with the error “…could not be created because all of its polygons are degenerate.” It’s just a basic box, so I don’t understand what went wrong.

Anyone know what I am missing here?

Thanks in advance.

It can be a bit of a fiddle moving things from Blender to UE. Epic recently did a workflow tutorial:

Also, why not make a cube in Blender?

It was more of an experiment. I start making different shapes from a base plane, so if a basic cube wasn’t going to work, I’d need to figure out a different way to model.

Is that plug-in they’re using actually available now?