Custom post type slider

custom-post-type-slider.php

<div class="bx-wrapper">
  <ul class="bxslider">    
  	<?php 	    
      $slider = new WP_Query(array( 'post_type' => 'homepage_slider' ) );		
			if( $slider->have_posts() ) : 
	  	while($slider->have_posts()) : 
	  	$slider->the_post();
			
	  	$thumb = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), 'full' ); ?>
      
    	<li class="featured-image" style="background-image: url('<?php echo $thumb['0'];?>')">
				<div class="slide-wrapper">
		    	<div class="slide-inner">
        		<?php the_content() ?>
          </div>
        </div>
      </li>
      
    <?php 
      endwhile; 
			endif; 
			wp_reset_postdata(); 
    ?>
  </ul><!-- /.bxslider -->
</div><!-- /.bx-wrapper -->

I would discourage the use of both query_posts() and wp_rest_query() as they are considered bad practice. Use the new WP_Query() with wp_reset_postdata().

Here's what the ammended code would look like... Revised CPT Slider

Thanks, updated.