Thank you Mario for your feedback I understood that is not the actual error that makes the agent not respond to the controller kindly check the following error i found in the same log: ERROR GlassfishJerseyInterceptor - Exception detected: java.lang.NullPointerException: null at com.singularity.ee.agent.appagent.services.transactionmonitor.common.ATransactionAcceptor.isDiscoveryEnabled(ATransactionAcceptor.java:615) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.common.ATransactionAcceptor.discoverTransactionName(ATransactionAcceptor.java:665) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.webservices.jaxrs.JaxRsTransactionAcceptor.getNameFromConfiguredNamingScheme(JaxRsTransactionAcceptor.java:93) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.serviceendpoints.ServiceEndpointMatchConfigResolver.resolveServiceEndpoint(ServiceEndpointMatchConfigResolver.java:53) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.serviceendpoints.ServiceEndpointDetector.resolveServiceEndPoint(ServiceEndpointDetector.java:184) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.serviceendpoints.ServiceEndpointDetector.identifyEntryServiceEndPoint(ServiceEndpointDetector.java:246) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.common.ATransactionAcceptor.acceptAndIdentifyServiceEndPoint(ATransactionAcceptor.java:210) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.common.ATransactionEntryPointInterceptor._onMethodBeginTracked(ATransactionEntryPointInterceptor.java:390) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.common.ATransactionEntryPointInterceptor.onMethodBeginTracked(ATransactionEntryPointInterceptor.java:167) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.transactionmonitor.webservices.jaxrs.JaxRSIdentificationInterceptor.onMethodBeginTracked(JaxRSIdentificationInterceptor.java:53) ~[appagent.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.services.bciengine.AFastTrackedMethodInterceptor.onMethodBegin(AFastTrackedMethodInterceptor.java:52) ~[appagent-boot.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.kernel.bootimpl.FastMethodInterceptorDelegatorImpl.safeOnMethodBeginNoReentrantCheck(FastMethodInterceptorDelegatorImpl.java:370) ~[appagent-boot.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.kernel.bootimpl.FastMethodInterceptorDelegatorImpl.safeOnMethodBegin(FastMethodInterceptorDelegatorImpl.java:295) ~[appagent-boot.jar:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at com.singularity.ee.agent.appagent.entrypoint.bciengine.FastMethodInterceptorDelegatorBoot.safeOnMethodBegin(FastMethodInterceptorDelegatorBoot.java:52) ~[?:Server Agent #20.10.0.31173 v20.10.0 GA compatible with 4.4.1.0 r29ff7e90931b7171bbfd8336067028701025517a release/20.10.0] at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java) ~[?:?] at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80) ~[?:?] at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253) ~[?:?] at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248) ~[?:?] at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244) ~[?:?] at org.glassfish.jersey.internal.Errors.process(Errors.java:292) ~[?:?] at org.glassfish.jersey.internal.Errors.process(Errors.java:274) ~[?:?] at org.glassfish.jersey.internal.Errors.process(Errors.java:244) ~[?:?] at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265) ~[?:?] at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232) ~[?:?] at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680) ~[?:?] at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:356) ~[?:?] at org.glassfish.admin.rest.adapter.JerseyContainerCommandService$3.service(JerseyContainerCommandService.java:179) ~[?:?] at org.glassfish.admin.rest.adapter.RestAdapter.service(RestAdapter.java:189) ~[?:?] at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:520) ~[?:?] at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:217) ~[?:?] at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:182) ~[?:?] at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:156) ~[?:?] at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:218) ~[?:?] at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:95) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:260) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:177) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:109) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:88) ~[?:?] at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:53) ~[?:?] at org.glassfish.grizzly.portunif.PUFilter.handleRead(PUFilter.java:208) ~[?:?] at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:95) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:260) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:177) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:109) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:88) ~[?:?] at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:53) ~[?:?] at org.glassfish.grizzly.portunif.PUFilter.handleRead(PUFilter.java:208) ~[?:?] at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:95) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:260) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:177) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:109) ~[?:?] at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:88) ~[?:?] at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:53) ~[?:?] at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:524) ~[?:?] at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:89) ~[?:?] at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:94) ~[?:?] at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:33) ~[?:?] at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:114) ~[?:?] at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:569) ~[?:?] at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:549) ~[?:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_221]
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