Christmas Countdown

Fatal error: Uncaught Error: Call to undefined function is_post_publicly_viewable() in /wp-includes/media.php:1648 Stack trace: #0 /wp-includes/shortcodes.php(364): gallery_shortcode(Array, '', 'gallery') #1 [internal function]: do_shortcode_tag(Array) #2 /wp-includes/shortcodes.php(261): preg_replace_callback('/\\[(\\[?)(galler...', 'do_shortcode_ta...', '<p style="text-...') #3 /wp-includes/plugin.php(235): do_shortcode('<p style="text-...') #4 /wp-includes/post-template.php(240): apply_filters('the_content', '<p style="text-...') #5 /wp-content/themes/dandelion_3.1/includes/post-template.php(98): the_content('') #6 /wp-includes/template.php(572): require_once('/wp-content/the...') #7 /wp-includes/template.php(531): load_template('//wp-content/th...', true) #8 /wp-content/themes/dandelion_3.1/single.php(31): locate_template(Array, true, true) #9 /wp-includes/template-loader.php(75): include('/wp-content/the...') #10 /wp-blog-header.php(19): require_once('/wp-includes/te...') #11 /index.php(17): require('/wp-blog-header. in /wp-includes/media.php on line 1648