Hi, Never seen this exception before and not sure yet what causes it:
java.lang.NullPointerException: Cannot invoke "String.equals(Object)" because "prefix" is null org.apache.jena.rdfxml.xmloutput.impl.BaseXMLWriter.checkLegalPrefix(BaseXMLWriter.java:845) org.apache.jena.rdfxml.xmloutput.impl.BaseXMLWriter.setNsPrefix(BaseXMLWriter.java:324) org.apache.jena.rdfxml.xmloutput.impl.BaseXMLWriter.primeNamespace(BaseXMLWriter.java:232) org.apache.jena.rdfxml.xmloutput.impl.BaseXMLWriter.setupNamespaces(BaseXMLWriter.java:482) org.apache.jena.rdfxml.xmloutput.impl.BaseXMLWriter.write(BaseXMLWriter.java:466) org.apache.jena.rdfxml.xmloutput.impl.BaseXMLWriter.write(BaseXMLWriter.java:456) com.atomgraph.linkeddatahub.server.io.ValidatingModelProvider.write(ValidatingModelProvider.java:129) Any hints?
