If you are trying to upload a WordPress theme in the WordPress Dashboard and are getting an error that says the theme is missing the style.css, this tutorial is for you!
The error message might look something like this:
Unpacking the package…
Installing the theme…
Te package could not be installed. The theme is missing the style.css stylesheet.
Theme install failed.
If you received this message, you more than likely uploading the wrong zipped file. Try unzipping the package you are trying to upload to see if the actual theme files are inside. It might be the case that there is more than just the theme files inside the zipped package.