“Missing style sheet” error when installing the theme
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.
When you downloaded a theme that supports child theme, it includes two theme files in the zip file you directly downloaded from your purchase. Unzip the file and extract the main theme and the child theme.
Upload the main theme and child theme separately to the WordPress.