enfold errol

Greetings, can you help me, I have an error on my website, my theme is enfold mje, it appears in the header and reads as follows thanks

Warning : Creating default object from empty value in /home/u268101899/domains/activaeraradio.com/public_html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/slideshow_layerslider/slideshow_layerslider.php on line 28


Contact with your purchase item author hope they will helped!