Hi raulis,

Thanks for reaching to us.

Please add below Custom Code to functions.php file in Child theme.

add_action('init', function () {
	if ( ! empty( $_SERVER['REQUEST_URI'] ) && false !== strpos( $_SERVER['REQUEST_URI'], trailingslashit( rest_get_url_prefix() ) ) && function_exists( 'wc_load_cart' ) && ! function_exists( 'wc_print_notices' ) ) {
		wc_load_cart();
	}
}, 1000);

Regards,