Warning message

Do you use the “avf_slideshow_title” filter to change the title somehow? If yes please make sure that the return value is a string and not an array.

If not open up wp-contentthemesenfoldconfig-templatebuilderavia-shortcodesslideshow.php and try to replace

if(trim($title) != "")   $title 	= "<h2 class='avia-caption-title'>".trim(apply_filters('avf_slideshow_title', $title))."</h2>";

with

if(trim($title) != "" && is_string($title))   $title 	= "<h2 class='avia-caption-title'>".trim(apply_filters('avf_slideshow_title', $title))."</h2>";

if(trim($title) != "" && is_array($title))   $title 	= "<h2 class='avia-caption-title'>".implode(",", apply_filters('avf_slideshow_title', $title))."</h2>";