Featured Images as Background on Posts page

I’m using a custom theme, it’s a child theme of Twenty Thirteen.

I am trying to pull in the post’s featured image as the background image for a <div> on the post page, for each post. (Where the list of blog posts are).

Here is the content-link.php page that is creating the list of posts.

<?php
/**
 * The template for displaying posts in the Link post format
 *
 * @package WordPress
 * @subpackage Twenty_Thirteen
 * @since Twenty Thirteen 1.0
 */
?>

<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> style="border: none;">
	<div class="entry-content">
			<header class="entry-header">
				<h1 class="entry-title">
					<a href="<?php echo esc_url( twentythirteen_get_link_url() ); ?>"><?php the_title(); ?></a>
				</h1>

				<div class="entry-meta">
					<?php twentythirteen_entry_date(); ?>
					<?php edit_post_link( __( 'Edit', 'twentythirteen' ), '<span class="edit-link">', '</span>' ); ?>
				</div><!-- .entry-meta -->
			</header><!-- .entry-header -->

			<?php if ( has_post_thumbnail() && ! post_password_required() ) : ?>
			<?php $imgID = get_post_thumbnail_id($post->ID); //get the id of the featured image
			$featuredImage = wp_get_attachment_image_src($imgID, 'full' );//get the url of the featured image (returns an array)
			$imgURL = $featuredImage[0]; //get the url of the image out of the array
			?>
			<div class="entry-thumbnail">
				<div id="cropped" style="background:url(<?php echo $imgURL ?>);"></div>
			</div>
			<?php endif; ?>

			<?php if ( has_excerpt() ) : ?>
			<div class="entry-summary">
				<?php the_excerpt(); ?>
			</div><!-- .entry-summary -->
			<?php endif; ?>

			<? /*<div class="entry-content">
				<?php the_content( __( 'Continue reading <span class="meta-nav">&rarr;</span>', 'twentythirteen' ) ); ?>
				<?php wp_link_pages( array( 'before' => '<div class="page-links"><span class="page-links-title">' . __( 'Pages:', 'twentythirteen' ) . '</span>', 'after' => '</div>', 'link_before' => '<span>', 'link_after' => '</span>' ) ); ?>
			</div><!-- .entry-content -->
			*/ ?>
			<?php if ( is_single() ) : ?>
			<footer class="entry-meta">
				<?php twentythirteen_entry_meta(); ?>
				<?php if ( get_the_author_meta( 'description' ) && is_multi_author() ) : ?>
					<?php get_template_part( 'author-bio' ); ?>
				<?php endif; ?>
			</footer><!-- .entry-meta -->
	</div>
	<?php endif; // is_single() ?>
</article><!-- #post -->

It doesn’t seem like the <?php if ( has_post_thumbnail() && ! post_password_required() ) : ?> is working correctly.

<div class="entry-thumbnail">
				<div id="cropped" style="background:url(<?php echo $imgURL ?>);"></div>
			</div>

Is getting pulled in even if the post doesn’t have a featured image attached to it.

Any help would be appreciated. Thank you.
https://theromanguy.com/dev/blog/ (the page in question)