Solr Error

gistfile1.txt

RSolr::Error::InvalidRubyResponse in Admin::SubstancesController#rescore

RSolr::Error::InvalidRubyResponse - 200 OK
Error: <result status="1">java.lang.NullPointerException
	at org.apache.solr.handler.XmlUpdateRequestHandler.doLegacyUpdate(XmlUpdateRequestHandler.java:132)
	at org.apache.solr.servlet.SolrUpdateServlet.doPost(SolrUpdateServlet.java:87)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:306)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)

Request Data: "<?xml version=\"1.0\" encoding=\"UTF-8\"?><add><doc><field name=\"id\">Substance 2290</field><field name=\"type\">Substance</field><field name=\"type\">ActiveRecord::Base</field><field name=\"class_name\">Substance</field><field name=\"search_show_b\">true</field><field name=\"searchname_s\">Substance</field><field name=\"grade_best_s\">C</field><field name=\"grade_worst_s\">D</field><field boost=\"2\" name=\"substance_names_text\">FRAGRANCE</field><field boost=\"2\" name=\"substance_names_text\">PARFUM</field><field name=\"cas_text\"></field></doc></add>"

Backtrace: /usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:259:in `rescue in evaluate_ruby_response'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:256:in `evaluate_ruby_response'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:231:in `adapt_response'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:167:in `execute'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:161:in `send_and_receive'
(eval):2:in `post'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:67:in `update'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/rsolr-1.0.8/lib/rsolr/client.rb:87:in `add'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/sunspot-1.3.3/lib/sunspot/indexer.rb:101:in `add_documents'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/sunspot-1.3.3/lib/sunspot/indexer.rb:26:in `add'
/usr/local/Cellar/rbenv/0.3.0/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/sunspot-1.3.3/lib/sunspot/session.rb:91:in `index'

app/models/substance.rb:307:in `store_scores'
app/models/substance.rb:298:in `create_score'
app/controllers/admin/substances_controller.rb:109:in `rescore'