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java.lang.NullPointerException: 	at org.apache.solr.servlet.SolrDispatchFilter.authenticateRequest(SolrDispatchFilter.java:241)	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:186)	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:179)