Why does my child theme CSS get called twice?

Has anyone else noticed this?
What I added to the function.php is –

add_action( ‘wp_enqueue_scripts’, ‘my_theme_enqueue_styles’ );
function my_theme_enqueue_styles() {

$parent_style = ‘parent-style’; // This is ‘twentynineteen-style’ for the Twenty Nineteen theme.

wp_enqueue_style( $parent_style, get_template_directory_uri() . ‘/style.css’ );
wp_enqueue_style( ‘child-style’,
get_stylesheet_directory_uri() . ‘/style.css’,
array( $parent_style ),
wp_get_theme()->get(‘Version’)
);
}