TwentySeventeen-child Theme function.php error

I copied code for Twentyseventeen-child function.php on how to add a sidebar to page.php.
I know that the page.php is not causing the error nor any other files used in child thembe because I have added them one by one without any coding in functions.php except wht is required for enreque.

Here is my code found functions.php file

<?php 
function childtheme_enqueue_styles() {
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')
);
}
add_action( 'wp_enqueue_scripts', 'childtheme_enqueue_styles' );
function twentyseventeen_body_classes_child( $classes ){
if ( is_active_sidebar( 'sidebar-1' ) &&  is_page() ) {
		$classes[] = 'has-sidebar';
	}
	return $classes;
}
add_filter( 'body_class', 'twentyseventeen_body_classes_child' );
?>	 

I have been trying for a while and do not know what I am doing wrong.
Help from someone would be very much appreciated.

I like TwentySeventeen. It is really cool to use. I just want to be able to add sidebars to page. But I get a 302 error when activating the child theme which is caused by the functions.php file. I do not understand why.

Thanks for much for some direction.