Fatal error: Uncaught Error: Call to undefined function wp_body_open() in /var/www/flatiron/data/www/flatiron.su/wp-content/plugins/wp-maintenance-mode/views/wpmm-page-template.php:25 Stack trace: #0 /var/www/flatiron/data/www/flatiron.su/wp-includes/template-loader.php(74): include() #1 /var/www/flatiron/data/www/flatiron.su/wp-blog-header.php(19): require_once('/var/www/flatir...') #2 /var/www/flatiron/data/www/flatiron.su/index.php(17): require('/var/www/flatir...') #3 {main} thrown in /var/www/flatiron/data/www/flatiron.su/wp-content/plugins/wp-maintenance-mode/views/wpmm-page-template.php on line 25