v6.6.0 is from 2017 and not supported anymore. You are really encouraged to upgrade!
Are you by any chance using Internet Explorer? (See https://stackoverflow.com/questions/56262704/solr-solrcore-initialization-failures-core-error) Jan > 5. mar. 2020 kl. 22:03 skrev Ryan W <rya...@gmail.com>: > > Hi all, > > On my dev server, in the Solr admin UI, I see... > > SolrCore Initialization Failures > {{core}}: {{error}} > Please check your logs for more information > {{exception.msg}} > > These appear to be template variables, but they are never populated. They > just dump to the screen. There is nothing useful in the log. If I click > over to the "original UI" via the link in the upper right corner of the > screen, there is no error displayed and all seems to be well. Meanwhile, > Apache Solr seems to be functioning OK. So this does not appear to be a > significant problem, but still a little annoying. > > I am trying to get the dev server to perform the same way as the staging > server, but at least in the "current UI," I get these errors in my dev > server. I have tried to compared the two installs very carefully, but > can't find any discrepancy between staging and dev. > > Both servers run... > Solr 6.6.6 > RHEL 7 > > Thank you, > Ryan
