Unity c# unity cannot unpack a file, what should I do?

Question

C++ / C#

from the asset store, the unity downloaded a couple of machine model files and when I click the open button in the unit, either nothing happens at all or I got an error with the text that the unit cannot unpack the package, what should I do?

Answer 1

Screenshots please. And the name of the asset, the version of the unit?

Answer 2

Try downloading other assets.