The output value for “src” is empty.
I changed the way to array:
<?php
$image = get_field('sixth_image');
if( !empty( $image ) ): ?>
<div class="px-lg-4 bits-img-folder">
<img src="<?php echo esc_url($image['url']); ?>" alt="<?php echo esc_attr($image['alt']); ?>" class="bits-img rounded border bg-white">
</div>
<?php endif; ?>
And this solution works. But there is another problem I will write about in a moment.
By the way, does the display of photos differ if it belongs to a group?
