I only copied the 2 jars -
jwt-auth-1.0.0.jar - jose4j-0.6.3.jar to the $SOLR_HOME/lib folder, to install the code for the https://github.com/cominvent/solr-auth-jwt plugin On Fri, Sep 13, 2019 at 11:55 AM Shawn Heisey <apa...@elyograg.org> wrote: > On 9/13/2019 10:30 AM, Tyrone Tse wrote: > > When I check the solr.log file I am seeing the following error > > > > 2019-09-13 15:09:27.816 ERROR (main) [ ] o.a.s.s.SolrDispatchFilter > Could > > not start Solr. Check solr/home property and the logs > > 2019-09-13 15:09:27.838 ERROR (main) [ ] o.a.s.c.SolrCore > > null:java.lang.NoClassDefFoundError: > > org/apache/solr/security/HttpClientBuilderPlugin > > That class should be in the solr-core jar. It was added in Solr 7.0, > didn't exist before that. > > The error is particularly strange because the SolrCore class which > logged the message is itself located in the solr-core jar. > > This problem can be caused by having multiple copies of the same jar, > even the same version, in different places on the classpath. Only add > extra jars to places like $SOLR_HOME/lib ... do not include jars for > Solr itself there. > > Thanks, > Shawn >