Fatal error: Uncaught Error: Call to undefined function create_function() in /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/wp-content/plugins/ajax-thumbnail-rebuild/ajax-thumbnail-rebuild.php:297
Stack trace:
#0 /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/wp-settings.php(305): include_once()
#1 /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/wp-config.php(93): require_once('/customers/a/b/...')
#2 /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/wp-load.php(37): require_once('/customers/a/b/...')
#3 /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/wp-blog-header.php(13): require_once('/customers/a/b/...')
#4 /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/index.php(17): require('/customers/a/b/...')
#5 {main}
  thrown in /customers/a/b/b/der-schluessel-zum-glueck.com/httpd.www/wp-content/plugins/ajax-thumbnail-rebuild/ajax-thumbnail-rebuild.php on line 297