Woocommerce order email template with product photo

<?php
/**
 * Admin new order email
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/emails/admin-new-order.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see         https://docs.woocommerce.com/document/template-structure/
 * @author WooThemes
 * @package WooCommerce/Templates/Emails/HTML
 * @version 2.5.0
 */

 if ( ! defined( 'ABSPATH' ) ) {
    exit;
 }

 /**
  * @hooked WC_Emails::email_header() Output the email header
  */
 do_action( 'woocommerce_email_header', $email_heading, $email ); ?>

 <p><?php printf( __( 'You have received an order from %s. The order is as follows:', 'woocommerce' ), $order->get_formatted_billing_full_name() ); ?></p>

 <?php

 /**
  * @hooked WC_Emails::order_details() Shows the order details table.
  * @hooked WC_Structured_Data::generate_order_data() Generates structured data.
  * @hooked WC_Structured_Data::output_structured_data() Outputs structured data.
  * @since 2.5.0
  */
//------------------------------Custom function starts here (nicolaslagios.com)
function sww_add_images_woocommerce_emails( $output, $order ) {

    // set a flag so we don't recursively call this filter
    static $run = 0;

    // if we've already run this filter, bail out
    if ( $run ) {
        return $output;
    }

    $args = array(
    'show_sku'      => true,
    'show_image'    => true,
    'image_size'    => array( 100, 100 ),
);

    // increment our flag so we don't run again
    $run++;

    // if first run, give WooComm our updated table
    return $order->email_order_items_table( $args );
}
add_filter( 'woocommerce_email_order_items_table', 'sww_add_images_woocommerce_emails', 10, 2 );
//------------------------------Custom function ends here (nicolaslagios.com)

do_action( 'woocommerce_email_order_details', $order, $sent_to_admin, $plain_text, $email );

 /**
  * @hooked WC_Emails::order_meta() Shows order meta data.
  */
 do_action( 'woocommerce_email_order_meta', $order, $sent_to_admin, $plain_text, $email );

 /**
  * @hooked WC_Emails::customer_details() Shows customer details
  * @hooked WC_Emails::email_address() Shows email address
  */
 do_action( 'woocommerce_email_customer_details', $order, $sent_to_admin, $plain_text, $email );

 /**
  * @hooked WC_Emails::email_footer() Output the email footer
  */
 do_action( 'woocommerce_email_footer', $email );