Using an image in the background of a row gives the following error:
Warning: array_map(): Argument #2 should be an array in /home/xxxxxxx/domains/xxxxx.nl/public_html/wp-content/plugins/js_composer/include/classes/editors/popups/class-vc-shortcode-edit-form.php on line 44
There is no image uploader visible when choosing for image / parallax
But choosing for e.g. Youtube video does give an image uploader for the placeholder image.