Fixed(!):
Change:
$html = wp_get_attachment_image( (int) $thumbnail_id, $thumbnail_size, false, $gargs );
— TO —
$html = get_the_post_thumbnail( $post->ID, $thumbnail_size, $gargs )
In function: “static function _field_thumbnail( $post, $_fargs ) {”
In file: “content-views-query-and-display-post-page/includes/html.php”
