dokuwiki\Exception\FatalException: Cannot redeclare class syntax_plugin_menu (previously declared in /var/www/vhosts/freestylersupport.com/httpdocs/wiki/lib/plugins/menu/syntax.php:28)

An unforeseen error has occured. This is most likely a bug somewhere. It might be a problem in the master plugin.

More info has been written to the DokuWiki error log.