I am getting same error. Message is that it’s missing the style.css stylesheet in the posttype plugin installation zip file.
Installing theme from uploaded file: movie-review-hub-pro-posttype_0.0.1.zip
This theme requires the following plugin: Movie Review Hub Pro Posttype.
Begin installing plugin | Dismiss this notice
Dismiss this notice.
Unpacking the package…
Installing the theme…
The package could not be installed. The theme is missing the style.css stylesheet.
Theme installation failed.