Splide Slider from ACF Field

function gallery_script_function() {?>
    <link rel="stylesheet" href="<?php echo get_stylesheet_directory_uri(); ?>/css/splide.min.css">
 <script src="<?php echo get_stylesheet_directory_uri(); ?>/js/splide.min.js"></script>
 <script>
  jQuery(document).ready(function(){
      new Splide( '.splide' ).mount();
   var slides = jQuery('.splide__list li').length;
   if(slides<=1){
    jQuery('.splide__arrows').hide();
   }
  });
 </script>
<?php }
add_action( 'wp_footer', 'gallery_script_function' );
add_shortcode( 'gallery_img', 'gallery_img_shortcode' );
function gallery_img_shortcode( $atts ) {
  ob_start();
 $gal_images = get_field('additional_gallery_images', get_the_ID());
 $size = 'full'; // (thumbnail, medium, large, full or custom size)
 if( $gal_images ): ?>
     <div class="splide direc_gall">
    <div class="splide__track">
      <ul class="splide__list">
         <?php foreach( $gal_images as $image_id ): ?>
             <li class="splide__slide">
                 <?php echo wp_get_attachment_image( $image_id, $size ); ?>
             </li>
         <?php endforeach; ?>
      </ul>
    </div>
     </div>
<?php endif; 
 $galvariable = ob_get_clean();
    return $galvariable; 
}