Гугл отзывы

Добрый день, подскажите, как правильно внедрить данный код?

Вот изначальный checkout.success.html

{strip}
<div class="checkout-pg">
	<div class="b-c-row-success-outer">
		<div class="b-c-row-success">
			<div class="col-img">
				<img src="{$wa_parent_theme_url}img/img-success.svg" alt="">
			</div>
			<div class="col-content">
				<div class="check-success">
					<div class="check-success__title bold single-line">
						{if !empty($thankyou_header)}
							{$thankyou_header}
						{else}
							[`Thank you!`]
						{/if}
					</div>
					<div class="check-success__num">
						<span>[`Your order number is `]</span>
						<strong><a href="{$wa->getUrl('shop/frontend/myOrder', ['id' => $order._id])}">{$order.id}</a></strong>
					</div>
					{if !empty($payment)}
						<div class="form-ui-wr form-ui-wr_s-pad form-ui-wr_qiwi">
							<div class="form-ui-wr__inner">
								<div class="s-plugin-wrapper">{$payment}</div>
							</div>
						</div>
					{/if}
					<div class="grey">{$theme_settings.shop_checkout_steps_success_text}</div>
					<div class="check-success__info">
						{if !empty($theme_settings.shop_checkout_steps_email) || !empty($theme_settings.shop_checkout_steps_phone)}
							<div>[`If you prefer, you can also get order status or make changes by`]:</div>
						{/if}
						{if !empty($theme_settings.shop_checkout_steps_email)}<div>[`E-mail`]: <a href="mailto:{$theme_settings.shop_checkout_steps_email}">{$theme_settings.shop_checkout_steps_email}</a></div>{/if}
						{if !empty($theme_settings.shop_checkout_steps_phone)}<div class="check-success__tel-num"><span>[`Phone`]: {$theme_settings.shop_checkout_steps_phone}</span>{/if}
						</div>
					</div>
					<!-- plugin hook: 'frontend_checkout' -->
					{if !empty($frontend_checkout)}
						{* @event frontend_checkout.%plugin_id% *}
						{foreach $frontend_checkout as $_}{$_}{/foreach}
					{/if}
				</div>
			</div>
		</div>
	</div>
</div>
{/strip}

Мне необходимо внедрить это https://support.google.com/mer...   

плюс Интеграция значка

<script src="https://apis.google.com/js/platform.js?onload=renderBadge" async defer></script>

<script>
  window.renderBadge = function() {
    var ratingBadgeContainer = document.createElement("div");
    document.body.appendChild(ratingBadgeContainer);
    window.gapi.load('ratingbadge', function() {
      window.gapi.ratingbadge.render(ratingBadgeContainer, {"merchant_id": 221403403});
    });
  }
</script>

Что куда вставлять? Мои попытки выдают 500 ошибку