I actually had exactly the same issue after creating a slideshow block with slick, as well as all of my other blocks that use javascript.
The problem was, I copied and pasted the wp_enqueue_script some documentation at some point and I had (notice the lack of a version #):
wp_enqueue_script( 'slideshow-block-library', get_template_directory_uri() . '/template-parts/block/js/slick.min.js', array('jquery'), true );
When I should have had:
wp_enqueue_script( 'slideshow-block-library', get_template_directory_uri() . '/template-parts/block/js/slick.min.js', array('jquery'), '1.0.0', true );
For more info, see the WordPress Docs here.
