Service Unavailable on http://mappings.dbpedia.org

Hi,
It has been 3-4 weeks of checking http://mappings.dbpedia.org/server/ontology/classes and I have been getting “Service Unavailable” consistently every-time. Are there any plans of fixing it? It seems useful for developers to be able to visually see the hierarchy.
Referred from: https://twitter.com/dbpedia/status/1343891459934740482

We appologize for the problem and thanks for the info.

The server is up again.

All the best,
Milan

@m1ci doesn’t seem to be online: http://mappings.dbpedia.org/server/ontology/classes

@siffi26 please use: http://dief.tools.dbpedia.org/server/ in the meantime. dief.tools is also more up-to-date.

Yes, you’re right! Issue persists on http://mappings.dbpedia.org/server/ontology/classes
Thanks @kurzum for passing the site link. I will use http://dief.tools.dbpedia.org/server/ for now.