Warning: require_once(/var/www/wp-content/plugins/custom-menu/class-custom-menu-install.php): failed to open stream: No such file or directory in /var/www/wp-content/plugins/custom-menu/custom-menu.php on line 34

Fatal error: require_once(): Failed opening required '/var/www/wp-content/plugins/custom-menu/class-custom-menu-install.php' (include_path='.:/usr/local/php5_6/lib/php') in /var/www/wp-content/plugins/custom-menu/custom-menu.php on line 34