Fatal error: Uncaught Error: Call to undefined function wp() in /var/www/vhosts/dr-grete-bauer.de/httpdocs/dr-grete-bauer/wp-blog-header.php:16
Stack trace:
#0 /var/www/vhosts/dr-grete-bauer.de/httpdocs/dr-grete-bauer/index.php(17): require()
#1 {main}
thrown in /var/www/vhosts/dr-grete-bauer.de/httpdocs/dr-grete-bauer/wp-blog-header.php on line 16