Hello,

Sorry for that, the code is for a different header. Try to use this one instead

add_filter( 'basel_header_configuration', 'basel_custom_header_configuration', 1, 1 );

function basel_custom_header_configuration() {

	return array(
		'container' => array(
			'wrapp-header' => array(
				'logo',
				'main_nav',
				'right-column' => array(
					'header_links',
					'wishlist',
					'cart',
					'mobile_icon',
				)
			)	
		),
		'secondary-header' => array(
			'container' => array(
				'categories_menu',
				'search_extended',
			)
		)

	);
}

Regards