Hello Walter, That is odd. Check the logs to see why the XSLT response writer is causing trouble. If you don't need it, you can just disable the response writer in the solrconfig.xml.
Regards, Markus Op wo 11 jan. 2023 om 16:13 schreef <c...@cid.is>: > Hi all, > > I'm running a fresh Solr 9.1.0 on a fresh Debian 11 PC. > > Creating my first core (the first on this stack, not the first in my > life...) finally fails with > > Error CREATEing SolrCore 'core_xxx': Unable to create core [core_xxx] > Caused by: solr.XSLTResponseWriter > > Thanks for your advice where to go from here. > > Walter Claassen >