TypeError: FYKOS\dokuwiki\Extenstion\PluginTaskRepo\Task::__construct(): Argument #5 ($lang) must be of type string, null given, called in /aux/akce/vyfuk/WWW/lib/plugins/fkstaskrepo/syntax/problem.php on line 88

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

More info has been written to the DokuWiki error log.