Hi, There were few discussions about similar issues these days. A JIRA issue was created https://issues.apache.org/jira/browse/SOLR-14768
Regards Dominique Le jeu. 27 août 2020 à 15:00, Divino I. Ribeiro Jr. < divinoirj.ib...@gmail.com> a écrit : > Hello everyone! > When I run an query to Solr Server, it returns the following message: > > 2020-08-27 03:24:03,338 ERROR org.dspace.app.rest.utils.DiscoverQueryBuilder > @ divinoirj.ib...@gmail.com::Error in Discovery while setting up date facet > range:date facet\colon; > org.dspace.discovery.configuration.DiscoverySearchFilterFacet@1350bf85 > org.dspace.discovery.SearchServiceException: Error from server at > http://localhost:8983/solr/search: Expected mime type > application/octet-stream but got text/html. <html> > <head> > <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> > <title>Error 500 java.lang.NoClassDefFoundError: > org/eclipse/jetty/server/MultiParts</title> > </head> > <body><h2>HTTP ERROR 500 java.lang.NoClassDefFoundError: > org/eclipse/jetty/server/MultiParts</h2> > <table> > <tr><th>URI:</th><td>/solr/search/select</td></tr> > <tr><th>STATUS:</th><td>500</td></tr> > > Solr instalation cores: > > CWD: /opt/solr-8.6.0/server > Instance: /var/solr/data/search > Data: /var/solr/data/search/data > Index: /var/solr/data/search/data/index > Impl: org.apache.solr.core.NRTCachingDirectoryFactory > > Thanks! >