TypeError: OAuth\ServiceFactory::buildV2Service(): Argument #4 ($scopes) must be of type array, string given, called in /var/www/heizungswiki/web/lib/plugins/oauth/vendor/lusitanian/oauth/src/OAuth/ServiceFactory.php on line 121

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

More info has been written to the DokuWiki error log.