Catchable fatal error: Argument 1 passed to twoJGallery::getThumbnailId() must be of the type array, null given, called in /home/content/98/7416598/html/wp-content/plugins/blog-mechanics-theme-gallery/frontend/gallery.php on line 247 and defined in /home/content/98/7416598/html/wp-content/plugins/blog-mechanics-theme-gallery/frontend/gallery.php on line 325