Fatal error: Uncaught Error: Call to undefined function has_post_video() in /mnt/web024/c1/32/52021632/htdocs/STRATO-apps/wordpress_01/app_alt/wp-content/themes/kickstart/single.php:21 Stack trace: #0 /mnt/web024/c1/32/52021632/htdocs/STRATO-apps/wordpress_01/app_alt/wp-includes/template-loader.php(106): include() #1 /mnt/web024/c1/32/52021632/htdocs/STRATO-apps/wordpress_01/app_alt/wp-blog-header.php(19): require_once('...') #2 /mnt/web024/c1/32/52021632/htdocs/STRATO-apps/wordpress_01/app_alt/index.php(17): require('...') #3 {main} thrown in /mnt/web024/c1/32/52021632/htdocs/STRATO-apps/wordpress_01/app_alt/wp-content/themes/kickstart/single.php on line 21