The download .ZIP is not working

I get the following message when I try to install the theme.

File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.

Have you tried installing the theme directly from you site administration panel?

https://codex.wordpress.org/Using_Themes#Adding_New_Themes_using_the_Administration_Panels

The solution for failed file upload is to increase the PHP upload limits. Please follow this solution:

https://mediatemple.net/community/products/dv/204404784/how-do-i-increase-the-php-upload-limits

Regards,
Kharis