Opencart failed to echo "shopping_cart" and "checkout" URL in footer.tpl
<p>I trying to do my own theme by cloning the "default" theme. </p>

<p>I want to add "shopping_cart" and "checkout" Text at the footer.</p>

<pre><code>&lt;a href="&lt;?php echo $shopping_cart; ?&gt;"&gt;cart&lt;/a&gt;

&lt;a href="&lt;?php echo $checkout; ?&gt;"&gt;checkout&lt;/a&gt;  
</code></pre>

<p><strong>However, I got the following ERROR URL when I click on either "cart" or "checkout" text</strong></p>

<pre><code>http://localhost/oc3/%3Cb%3ENotice%3C/b%3E:%20Undefined%20variable:%20shopping_cart%20in%20%3Cb%3EC:/xampp/htdocs/oc3/catalog/view/theme/gosu/template/common/footer.tpl%3C/b%3E%20on%20line%20%3Cb%3E44%3C/b%3E

http://localhost/oc3/%3Cb%3ENotice%3C/b%3E:%20Undefined%20variable:%20checkout%20in%20%3Cb%3EC:/xampp/htdocs/oc3/catalog/view/theme/gosu/template/common/footer.tpl%3C/b%3E%20on%20line%20%3Cb%3E46%3C/b%3E
</code></pre>

<p>It's a fresh opencart 2.3.0.2 without modifying anything.</p>

<p>Anyone can help?</p>