change the image with image slider

Hi all, i tried to change the header image with a slider images with the same dimension by using a child theme using your plugin. the code:

<div class=”custom-header”>
<div class=”custom-header-media”>
<?php echo do_shortcode(‘[smartslider3 slider=2]’); ?>
</div>
<?php get_template_part( ‘template-parts/header/site’, ‘branding’ ); ?>
</div> <!— .custom-header—->

it appears nothing …could you help please!

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