new_core: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Could not load conf for core new_core: Error loading solr config from /data/solr/data/new_core/conf/solrconfig.xml
解決方法 ：
刪除new_core 即可
# cd /usr/local/solr/solr/bin # ./solr delete -c new_core
然后就没有了