Wordpress - PHP Fatal error - Uncaught Error - operator not supported for strings in plugins/revslider

Ошибка

mod_fcgid: stderr: PHP Warning:  "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"? in /var/www/user/data/www/site.ru/wp-content/plugins/revslider/includes/output.class.php on line 3169
mod_fcgid: stderr: PHP Fatal error:  Uncaught Error: [] operator not supported for strings in /var/www/user/data/www/site.ru/wp-content/plugins/revslider/includes/framework/base-admin.class.php:71

связана с плагином revslider. Помогло понижение версии PHP 7.X до 5.6.X