acc gallery not working wordpress 5.5

<?php
/**
 * The default template for displaying content
 *
 * Used for both single and index/archive/search.
 *
 * @package WordPress
 * @subpackage Twenty_Fifteen
 * @since Twenty Fifteen 1.0
 */
?>
<article id="post-<?php
the_ID();
?>" <?php
post_class();
?>>
    <header class="entry-header">
        <?php
$current_gallery = get_field('gallery');
if (get_query_var('page')) {
$current_page = get_query_var('page');

} else {
    $current_page = 1;
}

//Setup pagination variables
$splitnumber = get_field('splitnum');
if (!empty($splitnumber)) {
    $splitnum = $splitnumber;
}
if (empty($splitnumber)) {
    $splitnum = 8;
}
$images         = array(); // Set images array for current page
$items_per_page = $splitnum; // How many items we should display on each page
$total_items    = count($current_gallery); // How many items we have in total
$num            = $total_items;
$total_pages    = ceil($total_items / $items_per_page); // How many pages we have in total
$translated     = __('Page', 'pixplus'); // Supply translatable string
$pagenum        = 1;
//$result = get_pagenum_link($pagenum, true);
$big            = 999999999;
$pagination     = paginate_links(array(
    'end_size' => 3,
    'mid_size' => 1,
   'base' => get_permalink() . '%#%' . '/',
   'format' => '%#%',
    'current' => $current_page,
    'total' => $total_pages,
    'before_page_number' => '<span class="screen-reader-text">' . $translated . ' </span>',
    'prev_next' => 'true',
    'link_before' => '',
    'link_after' => '',
    'prev_text' => __('< Previous'),
    'next_text' => __('Next >')
));
$taxonomy       = 'category';
// Get the term IDs assigned to post.
$post_terms     = wp_get_object_terms($post->ID, $taxonomy, array(
    'fields' => 'ids'
));
// Separator between links.
$separator      = ' ';
if (!empty($post_terms) && !is_wp_error($post_terms)) {
    echo '<div class="cat-links"><ul>';
    $term_ids = implode(',', $post_terms);
    $terms    = wp_list_categories(array(
        'title_li' => '',
        'style' => 'none',
        'echo' => false,
        'taxonomy' => $taxonomy,
        'include' => $term_ids
    ));
    $terms    = rtrim(trim(str_replace('<br />', $separator, $terms)), $separator);
    // Display post categories.
    echo $terms;
    echo '</ul></div>';
}
if (is_single()):
    the_title('<div class="page-title-number"><h1 class="entry-title">', '</h1>');
    echo '<h3>Page ' . $current_page . ' of ' . $total_pages . '</h3><button title="Copy the URL of this page to the clipboard" data-clipboard-target="#copy-me" class="url-copy"></button></div>';
    $first_page     = ($total_pages == 1);
    $not_first_page = ($current_page != 1);
    $not_last_page  = ($current_page != $total_pages);
    $last_page      = ($total_pages != 1 && $current_page >= $total_pages);
    if ($last_page) {
        echo '<p>Made this origami? Leave a comment & submit your photo <a href="#comments">here</a>.</p>';
    }
    $dudeurl  = get_post_meta(get_the_ID(), 'dude_url', true);
    $dudebutt = get_permalink($dudeurl);
    if ($not_last_page) {
        echo '<p>Made this origami? Leave a comment & submit your photo  on the last page <a href="' . $dudebutt . $total_pages . '#comments">here</a>.</p>';
    }
    if ($total_pages == 1) {
        echo '<p>Made this origami? Leave a comment & submit your photo <a href="#comments">here</a>.</p>';
    }
endif;
?>
<div class="linky"><input id="copy-me" value="<?php echo $dudebutt; echo $current_page ?>/"></div>

   </header><!-- .entry-header -->

    <div class="entry-content">
        <?php
if (function_exists('social_warfare')) {
    social_warfare();
}
echo '<div class="gallery-wrapper">';
//Get current page
if ($current_page === 1) {
    twentyfifteen_post_thumbnail();
    $key_3_value = get_post_meta(get_the_ID(), 'cat-title', true);
    // Check if the custom field has a value.
    if (!empty($key_3_value)) {
        echo '<h3><strong>';
        echo $key_3_value;
        echo '</strong></h3>';
    }
    echo '<div class="level-meta">';
    $key_1_value = get_post_meta(get_the_ID(), 'level', true);
    // Check if the custom field has a value.
    if (!empty($key_1_value)) {
        echo '<p>Level: ';
        echo $key_1_value;
        echo '</p>';
    }
    $key_2_value = get_post_meta(get_the_ID(), 'copyright', true);
    // Check if the custom field has a value.
    if (!empty($key_2_value)) {
        echo '<p>Copyright: ';
        echo $key_2_value;
        echo '  <a title="more info/report mistake" href="https://origami.guide/about-us-copyright-information/">?</a></p>';
    }
    echo '</p></div>';
    /* translators: %s: Name of current post */
    the_content(sprintf(__('Continue reading %s', 'twentyfifteen'), the_title('<span class="screen-reader-text">', '</span>', false)));
	echo do_shortcode('[sc name="moonad"]');
?>
<?php
    if (!empty($key_3_value)) {
        echo '<h3><strong>';
        echo $key_3_value;
        echo ' Instructions</strong></h3>';
    }
    $cattitle = get_field('cat-title');
    $video    = get_field('video');
    if ($video && $cattitle) {
        echo '<p></p><p>Scroll down to follow the photo tutorial for the <span style="text-transform: capitalize">' . $cattitle . '</span>, there is also a video tutorial available at the end (on the last page).</p>';
    }
}
$starting_point = (($current_page - 1) * $items_per_page); // Get starting point for current page
// Get elements for current page
if ($current_gallery) {
    $images = array_slice($current_gallery, $starting_point, $items_per_page);
}
$i = $starting_point;
if ($images) {
    $n  = 4; //or whatever you want to chunk into
    $ny = 8;
    echo '<section class="gallery-post"><ol class="post-gal">'; //always open one
    $lcv             = 1; // loop count variable
    $lcv2            = 1;
    $starting_pointy = (($current_page - 1) * $items_per_page + 1);
    foreach ($images as $image) {
        $tot_stuff = $starting_pointy++;
        $size      = 'large';
        echo '<li>

		<div class="linky"><input id="copy-me' . $tot_stuff . '" value="' . $dudebutt . $current_page . '#' . $tot_stuff . '" id="myInput" ></div>


		<span class="count" id="' . $tot_stuff . '">' . $tot_stuff . '</span>
<div class="step-image">
<span class="link-step">
<button title="Copy the URL of this step to the clipboard" data-clipboard-target="#copy-me' . $tot_stuff . '" class="url-copy"></button></span><a href="' . $image['url'] . '">' . wp_get_attachment_image($image['ID'], $size, true, array(
            "class" => "nopin mobx"
        )) . '</a></div>';
        if (get_field('auto_count_captions') == 'yes') {
            echo '<p><span class="">' . $tot_stuff . '. </span>' . $image['caption'] . '</p></li>';
        } else {
            echo '<p>' . $image['caption'] . '</p></li>';
        }
        if ($lcv++ % $n == 0 && $lcv < $num) { // every Nth item, unless we're done
            echo do_shortcode('[sc name="post ad banner"]');
        }
        if ($lcv2++ % $ny == 0 && $lcv2 < $num) { // every Nth item, unless we're done
        }
    }
    echo "</ol></section>"; //always close the last one.
}
echo '</ol></section>';
if ($current_page >= $total_pages) {
    $cattitle = get_field('cat-title');
    $video    = get_field('video');
    if ($video && $cattitle) {
        echo '<section class="gallery-post"><div id="video"><h2>Video Tutorial</h2>';
        echo '<p>A video tutorial for the <span style="text-transform: capitalize">' . $cattitle . '</span> is available:</p>';
        echo '<iframe width="720" height="405" src="https://www.youtube.com/embed/' . $video . '?rel=0&amp;controls=1&amp;showinfo=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe></div></section>';
    }
    $conclusion    = get_field('conclusion');
    $conclusioncol = get_field('conclusion-bg');
    if ($conclusion) {
        echo '<div class="conclusion" style="background:' . $conclusioncol . '!important;"><h3 style=" color:white; margin:10px 0 0 0;">Your ' . $cattitle . ' is Complete!</h3><p>' . $conclusion . '</p><p>Made this origami? Leave a comment & submit your photo <a href="#comments">here</a>.</p>';
    }
?>

<?php
    echo '</div>';
}
if ($pagination) {
    echo '<div class="pagination-wrapper">';
    if (($not_first_page) & ($total_pages >= 3)) {
        echo '<a href="' . $dudebutt . '"> << FIRST</a> ';
    }
    echo $pagination;
    if (($not_last_page) & ($total_pages >= 3)) {
        echo ' <a href="' . $dudebutt . $total_pages . '">LAST >> </a>';
    }
    echo '</div></div>';
}
?>
   <?php
if (function_exists('social_warfare')) {
    social_warfare();
}
?>

        <div class="tags">
            <?php
echo show_tags_except_hidden();
?>
       </div>
        <?php
		echo do_shortcode('[sc name="gbannerresponsive"]');

echo "<h3>What To Fold Next?</h3><ul class='prev-next'>";
// Get primary (Yoast) term if it is set

$currentID = get_the_ID();
$category = get_the_category();


$category_display = '';
$category_slug    = '';
if (class_exists('WPSEO_Primary_Term')) {
    // Show the post's 'Primary' category, if this Yoast feature is available, & one is set
    $wpseo_primary_term = new WPSEO_Primary_Term('category', get_the_id());
    $wpseo_primary_term = $wpseo_primary_term->get_primary_term();
    $term               = get_term($wpseo_primary_term);
    if (is_wp_error($term)) {
        // Default to first category (not Yoast) if an error is returned
        $category_display = $category[0]->term_id;
        $category_slug    = $category[0]->slug;
    } else {
        // Set variables for category_display & category_slug based on Primary Yoast Term
        $category_id      = $term->term_id;
        $category_term    = get_category($category_id);
        $category_display = $term->term_id;
        $category_slug    = $term->slug;
    }
} else {
    // Default, display the first category in WP's list of assigned categories
    $category_display = $category[0]->term_id;
    $category_slug    = $category[0]->slug;
}
previous_post_link_plus(array(
    'order_by' => 'menu_order',
    'order_2nd' => 'post_date',
    'in_cats' => $category_display,
    'meta_key' => '',
    'post_type' => '',
    'loop' => true,
    'end_post' => false,
    'in_same_tax' => 'category',
    'thumb' => 'thumbnail',
    'max_length' => 0,
    'format' => '&laquo; %link ',
    'link' => '%title',
    'date_format' => '',
    'tooltip' => '%title',
    'in_same_cat' => true,
    'before' => '<li>',
    'after' => '</li>'
));
next_post_link_plus(array(
    'order_by' => 'menu_order',
    'order_2nd' => 'post_date',
    'in_cats' => $category_display,
    'meta_key' => '',
    'post_type' => '',
    'loop' => true,
    'end_post' => false,
    'in_same_tax' => 'category',
    'thumb' => 'thumbnail',
    'max_length' => 0,
    'format' => '%link &raquo;',
    'link' => '%title',
    'date_format' => '',
    'tooltip' => '%title',
    'in_same_cat' => true,
    'before' => '<li>',
    'after' => '</li>'
));
echo '</ul>';

?>
       <?php
if ($current_page >= $total_pages) {
    if (comments_open() || get_comments_number()) {
        comments_template();
    }
}

		echo do_shortcode('[sc name="gbannerresponsive"]');
			?>

    </div><!-- .entry-content -->

    <footer class="entry-footer">
    </footer><!-- .entry-footer -->

</article><!-- #post-## -->