On Thu, Nov 2, 2023 at 8:27 AM Peter Radisson <radisson97(a)web.de> wrote:
I am willing the help to debug that if somebody is
telling me where to
look.
Try running rebuildLocalisationCache.php or rebuildmessages.php.
In general for broken local installs, asking on IRC (e.g. #mediawiki) is
best because people can help you debug the issue in realtime. There's also
https://www.mediawiki.org/wiki/Project:Support_desk which tends to be more
lively than this mailing list.