java.lang.NullPointerException: Cannot invoke "ucar.ma2.Array.getElementType()" because "values" is null at dap4.servlet.CDMWrap.buildattribute(CDMWrap.java:658) at dap4.servlet.CDMWrap.buildattributes(CDMWrap.java:625) at dap4.servlet.CDMWrap.fillgroup(CDMWrap.java:336) at dap4.servlet.CDMWrap.buildDMR(CDMWrap.java:277) at dap4.servlet.CDMWrap.open(CDMWrap.java:167) at thredds.server.dap4.Dap4Controller.getCDMWrap(Dap4Controller.java:123) at dap4.servlet.DapController.doDMR(DapController.java:263) at dap4.servlet.DapController.handleRequest(DapController.java:196) at thredds.server.dap4.Dap4Controller.handleRequest(Dap4Controller.java:59) at jdk.internal.reflect.GeneratedMethodAccessor86.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:258) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:191) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:991) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:896) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138) at org.apache.catalina.filters.CorsFilter.handleNonCORS(CorsFilter.java:332) at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:159) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138) at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:129) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138) at org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365) at thredds.servlet.filter.RequestBracketingLogMessageFilter.doFilter(RequestBracketingLogMessageFilter.java:50) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) at thredds.servlet.filter.RequestQueryFilter.doFilter(RequestQueryFilter.java:90) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) at thredds.servlet.filter.HttpHeadFilter.doFilter(HttpHeadFilter.java:47) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:233) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:191) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:362) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:278) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138) at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:70) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:165) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:88) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:113) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:83) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:654) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:72) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:903) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1797) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:973) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:491) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63) at java.base/java.lang.Thread.run(Thread.java:840) http://thredds.pkub.nilu.no/thredds/dap4/ebas/RU0013R.19910101070000.20181210133000.abs_tube.nitrogen_dioxide.air.7y.1d.RU01L_abst_13.RU01L_Griess.lev2.nc.dmr.xml