Fatal error: Uncaught Error: Call to undefined function wp() in /mnt/web713/d0/52/570550052/htdocs/STRATO-apps/wordpress_02/app/wp-blog-header.php:16
Stack trace:
#0 /mnt/web713/d0/52/570550052/htdocs/STRATO-apps/wordpress_02/app/index.php(17): require()
#1 {main}
  thrown in /mnt/web713/d0/52/570550052/htdocs/STRATO-apps/wordpress_02/app/wp-blog-header.php on line 16