I have the same problem. It appears when I’m not logged. I’ve tried with and without overlay and it still fails. I’m using the shortcode calling right on the head.php
"] })('overlay', { src:'https://...png' }) });"
I’m using the whole shortcode (as someone recommended):
<?php echo do_shortcode( ‘[vegasslider id=”4″ arrows=”yes” delay=”10000″ overlay=”url-to-my-image” fade=”1500″ title=””]’ ) ?>
