Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in /var/www/vhosts/greftenhoeve.nl/httpdocs/db.php:13
Stack trace:
#0 /var/www/vhosts/greftenhoeve.nl/httpdocs/index.php(13): include()
#1 {main}
  thrown in /var/www/vhosts/greftenhoeve.nl/httpdocs/db.php on line 13