When you're trying to install a theme on WordPress for the first time, you may experience an error message stating: “The package could not be installed. The theme is missing the style.css stylesheet. Theme install failed.”   This issue is mainly caused by the fact that we forget to open (unzip) the first file and select the correct file to install. Here is how to solve it:   1 - When you purchase a theme and download the theme package, you will receive and download a zipped folder (.zip). 2 - Unzip this first theme package folder. 3 - Within the unzipped theme package, you will find some folders such as Demo Import Files, Guides, etc. (depending on your theme). You will also find a zipped file named “Freyja-v305.zip” (where "Freyja" is the name of your theme, and "v305" is the version of your theme, which may be different ). This is the file you should install on your WordPress site. 4 - Install the theme. 5 - Done!