I tried below code in order update email template to get order items but it’s not coming , kindly tell me if any other option available
<!--
/**
* Copyright © 2015 Magento. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<!--@subject Your {{var store.getFrontendName()}} order has shipped @-->
<!--@vars {
"var formattedBillingAddress|raw":"Billing Address",
"var order.getEmailCustomerNote()":"Email Order Note",
"var order.increment_id":"Order Id",
"layout handle=\"sales_email_order_items\" order=$order area=\"frontend\"":"Order Items Grid",
"var payment_html|raw":"Payment Details",
"var formattedShippingAddress|raw":"Shipping Address",
"var order.getShippingDescription()":"Shipping Description"
} @-->
{{template config_path="design/email/header_template"}}
<table>
<tr class="email-intro">
<td>
<p class="greeting">{{trans "%customer_name," customer_name=$order.getCustomerName()}}</p>
<p>
{{trans
"Your order #%increment_id has been updated with a status of <strong>%order_status</strong>."
increment_id=$order.increment_id
order_status=$order.getStatusLabel()
|raw}}
{{trans "Thank you for your order from %store_name." store_name=$store.getFrontendName()}}
{{trans 'You can check the status of your order by <a href="%account_url">logging into your account</a>.' account_url=$this.getUrl($store,'customer/account/',[_nosid:1]) |raw}}
</p>
<p>
{{trans 'If you have questions about your order, you can email us at <a href="mailto:%store_email">%store_email</a>.' store_email=$store_email |raw}}
</p>
</td>
</tr>
<tr class="email-summary">
<td>
<h1>Order Shipped!</h1>
<h1>{{trans 'Your Order <span class="no-link">#%increment_id</span>' increment_id=$order.increment_id |raw}}</h1>
<p>{{trans 'Placed on <span class="no-link">%created_at</span>' created_at=$order.getCreatedAtFormatted(1) |raw}}</p>
</td>
</tr>
<tr class="email-information">
<td>
{{depend order.getEmailCustomerNote()}}
<table class="message-info">
<tr>
<td>
{{var order.getEmailCustomerNote()|escape|nl2br}}
</td>
</tr>
</table>
{{/depend}}
<table class="order-details">
<tr>
<td class="address-details">
<h3>{{trans "Billing Info"}}</h3>
<p>{{var formattedBillingAddress|raw}}</p>
</td>
{{depend order.getIsNotVirtual()}}
<td class="address-details">
<h3>{{trans "Shipping Info"}}</h3>
<p>{{var formattedShippingAddress|raw}}</p>
</td>
{{/depend}}
</tr>
<tr>
<td class="method-info">
{{depend shipping_arrival_date}}
<h3>{{trans "Order Delivery Date"}}</h3>
<p>{{var shipping_arrival_date}}</p>
{{/depend}}
{{depend shipping_delivered_date}}
<h3>{{trans "Actual Ship Date"}}</h3>
<p>{{var shipping_delivered_date}}</p>
{{depend shipping_delivered_date}}
</td>
{{depend order.getIsNotVirtual()}}
<td class="method-info">
<h3>{{trans "Shipping Method"}}</h3>
<p>{{var order.getShippingDescription()}}</p>
</td>
{{/depend}}
</tr>
<tr>
{{depend carrier_name}}
<td class="method-info">
<h3>{{trans "Shipped By"}}</h3>
<p>{{var carrier_name}}</p>
</td>
{{/depend}}
{{depend carrier_name}}
<td class="method-info">
<h3>{{trans "Tracking Number"}}</h3>
<p>{{var tracing_number}}</p>
</td>
{{/depend}}
</tr>
<tr>
{{depend shipping_arrival_comments}}
<td class="method-info">
<h3>{{trans "Order Comment"}}</h3>
<p>{{var shipping_arrival_comments}}</p>
</td>
{{/depend}}
</tr>
</table>
{{layout handle="sales_email_order_items" order=$order area="frontend"}}
</td>
</tr>
</table>
{{template config_path="design/email/footer_template"}}