java.lang.NullPointerException:null
at org.bithon.agent.rpc.brpc.tracing.BrpcTraceSpanMessage$Builder.setClazz(BrpcTraceSpanMessage.java:1596)
at org.bithon.agent.dispatcher.brpc.BrpcMessageConverter.from(BrpcMessageConverter.java:122)
at org.bithon.agent.observability.tracing.Tracer$DefaultReporter.lambda$report$0(Tracer.java:145)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at org.bithon.agent.observability.tracing.Tracer$DefaultReporter.report(Tracer.java:147)
at org.bithon.agent.observability.tracing.context.TraceContext.finish(TraceContext.java:105)
at org.bithon.agent.plugin.tomcat.interceptor.StandardHostValve$Invoke.after(StandardHostValve$Invoke.java:119)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:183)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:768)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:389)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)