Fatal error: Access level to Kufer\Web\Classes\Api\SearchRestriction\SearchRestrictionKatGebuehrVonFilter::cleanFilterKriterium() must be public (as in class Kufer\Web\Classes\Api\SearchRestriction\SearchRestriction) in /www/htdocs/w0207743/koeln.site-testing.de/public/fileadmin/kuferweb/classes/api/sucheinschraenkung/SearchRestrictionKatGebuehrVonFilter.php on line 34