when I try to upload a theme I have created on a free host, I got this error failed because
The style.css stylesheet doesn’t contain a valid theme header.

then I put this on my styles.css , but still getting this error , although the theme works very well on the localhost.
what should I do, please?

/*
    Theme Name: shah
    Author: shah
    Author URI: http://shah.gq
    Description: WordPress Theme
    Version: 1.0
*/