Edges not showing in model from 3d warehouse

I imported a furniture from 3d warehouse but when I try to export it as 2d graphics, nothing comes out. No edges are being shown but there are mesh when I turn on the Hidden Geometry. I want to make a lineart out of it so I really need the edges of the model showing. What should I do?

That seems to be a common thing. Authors often hide all of the edges of softened stuff. You can turn on Profiles in the style settings or edit the object and unhide the needed edges or both.

What version of SketchUp are you using? Your profile says SketchUp for Schools 2021 but there is no such version. SketchUp for Schools is web based and for primary school children.