In meshlab it also looks ok. So we need more info on specifically what you see as wrong - it could be a problem with Cura rather than with the SketchUp stl export.
There’s a gap between the Chinese character and the face of the star. You don’t suppose that would cause a problem would it?
I moved the character down and intersected it with the top face of the star. Then deleted some internal faces and made it a component. It reported as a solid component. I uploaded it to iMaterialise because I have their extension already installed. It appears to be find for printing.