Hotspots sampling is not enabled in this servernet.bull.javamelody.internal.model.Collector.getHotspots(Collector.java:160)net.bull.javamelody.internal.web.SerializableController.createHotspotsSerializable(SerializableController.java:183)java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)java.base/java.lang.reflect.Method.invoke(Method.java:566)net.bull.javamelody.internal.web.RequestToMethodMapper.invokeAndReturn(RequestToMethodMapper.java:105)net.bull.javamelody.internal.web.SerializableController.createSerializable(SerializableController.java:114)net.bull.javamelody.internal.web.MonitoringController.doCompressedSerializable(MonitoringController.java:316)net.bull.javamelody.internal.web.MonitoringController.doReportCore(MonitoringController.java:241)net.bull.javamelody.internal.web.MonitoringController.doReport(MonitoringController.java:211)net.bull.javamelody.internal.web.MonitoringController.doActionIfNeededAndReport(MonitoringController.java:163)net.bull.javamelody.MonitoringFilter.doMonitoring(MonitoringFilter.java:408)net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:206)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)fr.spi4j.filter.HttpSessionFilter.doFilter(HttpSessionFilter.java:69)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:199)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ForbiddenActionsFilter.doFilter(ForbiddenActionsFilter.java:24)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)fr.spi4j.lib.security.RemoteUserFilter.doFilter(RemoteUserFilter.java:66)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594)org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)java.base/java.lang.Thread.run(Thread.java:834)