Fatal error: Uncaught Error: Call to undefined function create_function() in /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-content/plugins/revslider/includes/framework/functions-wordpress.class.php:258 Stack trace: #0 /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-content/plugins/revslider/revslider.php(87): RevSliderFunctionsWP::registerWidget('RevSliderWidget') #1 /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-settings.php(473): include_once('/var/www/vhosts...') #2 /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-config.php(129): require_once('/var/www/vhosts...') #3 /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-load.php(50): require_once('/var/www/vhosts...') #4 /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-blog-header.php(13): require_once('/var/www/vhosts...') #5 /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/index.php(17): require('/var/www/vhosts...') #6 {main} thrown in /var/www/vhosts/111-2401.kk-business.net/friederike-moeckel.de/httpdocs/wp-content/plugins/revslider/includes/framework/functions-wordpress.class.php on line 258