Fatal error: Uncaught Error: Call to undefined function create_function() in /customers/9/5/2/severijns.co/httpd.www/wp-content/plugins/mailchimp-widget/lib/ns_mc_plugin.class.php:29
Stack trace:
#0 /customers/9/5/2/severijns.co/httpd.www/wp-content/plugins/mailchimp-widget/lib/ns_mc_plugin.class.php(35): NS_MC_Plugin->__construct()
#1 /customers/9/5/2/severijns.co/httpd.www/wp-content/plugins/mailchimp-widget/mailchimp-widget.php(48): NS_MC_Plugin::get_instance()
#2 /customers/9/5/2/severijns.co/httpd.www/wp-settings.php(371): include_once('/customers/9/5/...')
#3 /customers/9/5/2/severijns.co/httpd.www/wp-config.php(116): require_once('/customers/9/5/...')
#4 /customers/9/5/2/severijns.co/httpd.www/wp-load.php(37): require_once('/customers/9/5/...')
#5 /customers/9/5/2/severijns.co/httpd.www/wp-blog-header.php(13): require_once('/customers/9/5/...')
#6 /customers/9/5/2/severijns.co/httpd.www/index.php(17): require('/customers/9/5/...')
#7 {main}
  thrown in /customers/9/5/2/severijns.co/httpd.www/wp-content/plugins/mailchimp-widget/lib/ns_mc_plugin.class.php on line 29