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.
Please make sure you are uploading only the installable theme which is called NameOf Theme.zip. If you upload ALL these files you will receive an error!
If you already have images in your Media Library when you installed wp theme, you would need to regenerate images.
Follow the steps below:
It will take some time depending on the number of images in your Media Library.
Please do not close your browser, as it will stop the process. You may continue configuring your website in a new browser tab.