Fatal error: Uncaught Error: Call to undefined function create_function() in /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-content/plugins/post-notif/includes/class-post-notif-widget.php:276 Stack trace: #0 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-content/plugins/post-notif/includes/class-post-notif.php(129): require_once() #1 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-content/plugins/post-notif/includes/class-post-notif.php(74): Post_Notif->load_dependencies() #2 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-content/plugins/post-notif/post-notif.php(81): Post_Notif->__construct() #3 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-content/plugins/post-notif/post-notif.php(85): run_post_notif() #4 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-settings.php(305): include_once('/customers/c/a/...') #5 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-config.php(115): require_once('/customers/c/a/...') #6 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-load.php(37): require_once('/customers/c/a/...') #7 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-admin/admin.php(31): require_once('/customers/c/a/...') #8 /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-admin/index.php(10): require_once('/customers/c/a/...') #9 {main} thrown in /customers/c/a/d/autonomes-seminar-hu-berlin.org/httpd.www/wp-content/plugins/post-notif/includes/class-post-notif-widget.php on line 276