Indexing urlmeta fields into Solr 5.5.3 (Was RE: Failing to index from Nutch 1.12 to Solr 5.5.3)

We've found that the solrindex process chokes on the custom metadata fields I added to my Nutch using the urlmeta plugin. A sample of the lengthy error messages: java.lang.Exception: org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at

Failing to index from Nutch 1.12 to Solr 5.5.3

I'm switching to more recent Nutch/Solr, after years of using Nutch 1.4 and Solr 3.3.0. I get no results when I index into Solr. I can't tell where this breaks down. I use these commands: cd /opt/apache-nutch-1.12/runtime/local export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.121.x86_64