WordPress - This theme is broken. The parent theme is missing. Please install the "THEME" parent theme

Issue

In my WordPress website, I have created a child theme based on theme Divi, the child theme works perfectly and it has never had a problem, it doesn't display any PHP error message on the screen and the design is fully responsive as I expected.

I normally push the child theme folder and child theme files through GIThub.

Today I have realized that the Appearence->Editor on the admin area in WordPress displays the message:

This theme is broken. The parent theme is missing. Please install the "divi" parent theme.

I can't figure out why that error message come out only now. Can you please guys advise?

WordPress Version 4.5.13

Child Theme CSS header:

/*
 Theme Name:   Divi Child
 Theme URI:    https://webmarcello.co.uk/
 Description:  Divi Child Theme
 Author:       Marcello Perri
 Author URI:   https://webmarcello.co.uk/
 Template:     divi
 Version:      1.0.0
 License:      GNU General Public License v2 or later
 License URI:  https://www.gnu.org/licenses/gpl-2.0.html
 Tags:         light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
 Text Domain:  divichild
*/

Thanks

Solution

I fixed this problem, the problem was the attribute Template: divi in the header of my child theme CSS file, the word divi (which is the parent theme) must have capital D.

Here is the CSS header correct:

/*
 Theme Name:   Divi Child
 Theme URI:    https://webmarcello.co.uk/
 Description:  Divi Child Theme
 Author:       Marcello Perri
 Author URI:   https://webmarcello.co.uk/
 Template:     Divi
 Version:      1.0.0
 License:      GNU General Public License v2 or later
 License URI:  https://www.gnu.org/licenses/gpl-2.0.html
 Tags:         light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
 Text Domain:  divichild
*/

Thanks for the help anyway.

UPDATE 2023:

As people suggested below, the Template needs to be set with the exact name of the template folder:

Template: <template folder name>

Answered By - Marcello Perri