Error with Child Theme

I follow this instructions than the other support sends me, i did it all but when i was in the fifth step all fall.

Here is the steps:
1. create a child theme
2. duplicate widgets/fp-latest-news.php from your parent theme to your child theme
3. open and edit fp-latest-news.php within your child theme change this line 'posts_per_page' => 3, to 'posts_per_page' => 6,
4. open and edit functions.php within your child theme then add this line:
if ( function_exists('siteorigin_panels_activate') ) {
require_once get_template_directory() . "-child/widgets/fp-latest-news.php";
}

5. open and edit fp-latest-news.php within your parent theme then change this line: require_once get_template_directory() . "/widgets/fp-latest-news.php";
to // require_once get_template_directory() . "/widgets/fp-latest-news.php";

For the child theme i created a folder named sydney-child, i created a style.css in here that redirect from the sydney style.css, and then i choosed the child theme in the wordpress, till then all was fine

if i remove all the child theme the wordpress it will fixed?

this is the line 9

}

if ( ! function_exists( ‘sydney_setup’ ) ) :
/**
* Sets up theme defaults and registers support for various WordPress features.
*
* Note that this function is hooked into the after_setup_theme hook, which
* runs before the init hook. The init hook is too late for some features, such
* as indicating support for post thumbnails.