A common issue that can occur when installing a WordPress themes is “The package could not be installed. The theme is missing the style.css stylesheet.” error message being displayed when uploading or activating the theme.
One of the reasons you may receive this error is if you have uploaded the incorrect file. You have 2 options for downloading your theme.
- Installable WordPress file only. You can upload downloaded zip in WordPress.
- All files & documentation. In this case, you need to extract downloaded zip first and inside you will see installable WordPress zip archive.