type Exception report
message Request processing failed; nested exception is java.util.ConcurrentModificationException
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.util.ConcurrentModificationException org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) ORG.oclc.metrics.servlet.http.BasicStatMetricFilter.doFilter(BasicStatMetricFilter.java:90) org.oclc.access.filter.HttpHEADFilter.doFilter(HttpHEADFilter.java:36) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
root cause
java.util.ConcurrentModificationException org.apache.jena.mem.HashCommon$BasicKeyIterator.hasNext(HashCommon.java:364) org.apache.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:105) org.apache.jena.mem.NodeToTriplesMapBase$1.hasNext(NodeToTriplesMapBase.java:133) org.apache.jena.mem.NodeToTriplesMapBase$1.next(NodeToTriplesMapBase.java:118) org.apache.jena.mem.NodeToTriplesMapBase$1.next(NodeToTriplesMapBase.java:112) org.apache.jena.util.iterator.WrappedIterator.next(WrappedIterator.java:94) org.apache.jena.mem.TrackingTripleIterator.next(TrackingTripleIterator.java:47) org.apache.jena.mem.TrackingTripleIterator.next(TrackingTripleIterator.java:31) org.apache.jena.atlas.iterator.Iter$2.next(Iter.java:270) org.apache.jena.atlas.iterator.Iter.next(Iter.java:908) org.apache.jena.riot.writer.JenaRDF2JSONLD.parse(JenaRDF2JSONLD.java:49) org.apache.jena.riot.writer.JsonLDWriter.toJsonLDJavaAPI(JsonLDWriter.java:205) org.apache.jena.riot.writer.JsonLDWriter.serialize(JsonLDWriter.java:178) org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:139) org.apache.jena.riot.writer.JsonLDWriter.write(JsonLDWriter.java:145) org.apache.jena.riot.system.RiotLib$WriterAdapter.write(RiotLib.java:419) org.apache.jena.riot.adapters.RDFWriterRIOT.write(RDFWriterRIOT.java:91) org.oclc.access.view.JenaRDF2JSONLDView.renderMergedOutputModel(JenaRDF2JSONLDView.java:80) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1228) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1011) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) ORG.oclc.metrics.servlet.http.BasicStatMetricFilter.doFilter(BasicStatMetricFilter.java:90) org.oclc.access.filter.HttpHEADFilter.doFilter(HttpHEADFilter.java:36) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
note The full stack trace of the root cause is available in the logs.