{"status":"ERROR","err":"Failed: Error: {\n  \"error\":{\n    \"metadata\":[\"error-class\",\"org.apache.solr.common.SolrException\",\"root-error-class\",\"org.apache.solr.common.SolrException\"],\n    \"msg\":\"SolrCore is loading\",\n    \"code\":503\n  }\n}"}