Load php function via AJAX in specific div

Hi.

I have a little problem with my ajax request to load a specific menu on the left depending on used page template.

First, PHP on functions.php

function reload_menu_via_ajax()
{
     wp_enqueue_script( 'function', get_template_directory_uri().'/library/js/menuReload.js', 'jquery', true);
     wp_localize_script( 'function', 'left_menu_reload', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) );
}
add_action('template_redirect', 'reload_menu_via_ajax');

$dirName = dirname(__FILE__);
$baseName = basename(realpath($dirName));
require_once ("$dirName/menu.php");

function get_left_menu() {
	if (is_page_template('page-akademia-biznesu.php')) {
		echo do_shortcode('[dcwp-jquery-accordion menu="Business menu" auto_close="true" event="click" save="true" disable="false" count="false" expand="false" disable_class="disabled"]');
	} elseif (is_page_template('page-forum-wiedzy-oze.php')) {
		echo do_shortcode('[dcwp-jquery-accordion menu="OZE menu" auto_close="true" event="click" save="true" disable="false" count="false" expand="false" disable_class="disabled"]');
	} elseif (is_page_template('page-o-nas.php')) {
		echo do_shortcode('[dcwp-jquery-accordion menu="About menu" auto_close="true" event="click" save="false" disable="false" count="false" expand="false" disable_class="disabled"]');
	} elseif (is_page_template('page-program-ambasadorski.php')) {
		echo do_shortcode('[dcwp-jquery-accordion menu="Ambassador menu" auto_close="true" event="click" save="true" disable="false" count="false" expand="false" disable_class="disabled"]');
	} elseif (is_page_template('page-program-edukacyjny.php')) {
		echo do_shortcode('[dcwp-jquery-accordion menu="Aside menu" auto_close="true" event="click" save="true" disable="false" count="false" expand="false" disable_class="disabled"]');
	}
die();
}
add_action("wp_ajax_nopriv_get_left_menu", "get_left_menu");
add_action("wp_ajax_get_left_menu", "get_left_menu");

And of course jQuery file:

jQuery(document).ready(function($) {
	$(function() {
		$('nav ul li').click(function() {
			setTimeout(function() {
				$.ajax({
					type : "POST",
					url : left_menu_reload.ajaxurl,
					data : {
						action : 'get_left_menu'
					},
					success : function(data) {
						$('#left-menu').html(data);
					}
				});
			}, 5000);
		});
	});
});

I’m serious stuck at this, if anyone know the solution please help me out.