Coming across below exception on a node of cluster. Please adivse.

2018-11-15 05:10:43,686 [4b9d6!, eon_id=xxxxx] [ ] [ ] [ ] (.PresenceLifeCycleEventManager) ERROR - Failed to update tracker and/or session state for requestor with ID: H17A20B59C839A00FF35C582AAB2A3711
java.lang.IllegalArgumentException: One of the argument is null<operatorId,TenantId>:shared
at com.pega.pegarules.cluster.internal.presence.PresenceDataGridHazelcast$CacheKey.<init>(PresenceDataGridHazelcast.java:129) ~[prcluster.jar:?]
at com.pega.pegarules.cluster.internal.presence.PresenceDataGridHazelcast.replace(PresenceDataGridHazelcast.java:165) ~[prcluster.jar:?]
at com.pega.pegarules.session.internal.presence.PresenceDataProcessorImpl.updateSession(PresenceDataProcessorImpl.java:216) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.presence.PresenceLifeCycleEventManager.canReconnectSession(PresenceLifeCycleEventManager.java:255) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.presence.PresenceLifeCycleEventManager.updateTrackerOrReconnectSession(PresenceLifeCycleEventManager.java:59) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.serverpush.atmosphere.AtmospherePegaHandler.updatePresenceTrackerOrReconnectSession(AtmospherePegaHandler.java:205) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.serverpush.atmosphere.AtmospherePegaHandler.onGet(AtmospherePegaHandler.java:191) ~[prprivate.jar:?]
at sun.reflect.GeneratedMethodAccessor78.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_102]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_102]
at org.atmosphere.util.Utils.invoke(Utils.java:209) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at org.atmosphere.config.managed.ManagedAtmosphereHandler.invoke(ManagedAtmosphereHandler.java:335) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at org.atmosphere.config.managed.ManagedAtmosphereHandler.onRequest(ManagedAtmosphereHandler.java:158) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:223) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:115) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:68) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:2209) ~[pratmosphere-runtime- Proprietary information hidden.jar:?]
at com.pega.pegarules.session.internal.serverpush.atmosphere.AtmospherePushEngine.handleRequestHook(AtmospherePushEngine.java:314) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.serverpush.AbstractPushEngine.handleRequest(AbstractPushEngine.java:247) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.engineinterface.service.AsyncRequestAPI.processRequest(AsyncRequestAPI.java:57) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.engineinterface.service.AsyncRequestAPI.invoke(AsyncRequestAPI.java:34) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl._invokeEngine_privact(EngineImpl.java:331) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl.invokeEngine(EngineImpl.java:274) ~[prprivate.jar:?]
at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl.invokeEngine(EngineImpl.java:251) ~[prprivate.jar:?]
at com.pega.pegarules.priv.context.JNDIEnvironment.invokeEngineInner(JNDIEnvironment.java:278) ~[prpublic.jar:?]
at com.pega.pegarules.priv.context.JNDIEnvironment.invokeEngine(JNDIEnvironment.java:223) ~[prpublic.jar:?]
at com.pega.pegarules.web.impl.WebStandardImpl.makeEtierRequest(WebStandardImpl.java:596) ~[prwebj2ee.jar:?]
at com.pega.pegarules.web.impl.WebStandardImpl.doPost(WebStandardImpl.java:385) ~[prwebj2ee.jar:?]
at sun.reflect.GeneratedMethodAccessor61.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_102]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_102]
at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:370) ~[prbootstrap-7.3.0-77.jar:7.3.0-77]
at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:411) ~[prbootstrap-7.3.0-77.jar:7.3.0-77]
at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethodPropagatingThrowable(AppServerBridgeToPega.java:224) ~[prbootstrap-api-7.3.0-77.jar:7.3.0-77]
at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethod(AppServerBridgeToPega.java:273) ~[prbootstrap-api-7.3.0-77.jar:7.3.0-77]
at com.pega.pegarules.internal.web.servlet.WebStandardBoot.doPost(WebStandardBoot.java:121) ~[prbootstrap-api-7.3.0-77.jar:7.3.0-77]
at com.pega.pegarules.internal.web.servlet.WebStandardBoot.doGet(WebStandardBoot.java:92) ~[prbootstrap-api-7.3.0-77.jar:7.3.0-77]
at javax.servlet.http.HttpServlet.service(Unknown Source) ~[servlet-api.jar:?]
at javax.servlet.http.HttpServlet.service(Unknown Source) ~[servlet-api.jar:?]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(Unknown Source) ~[tomcat7-websocket.jar:7.0.59]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at com.ms.webeng.tomcat.PingValve.invoke(PingValve.java:368) ~[webinfra.tomcat-libs.jar:?]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at com.ms.webeng.tomcat.ThreadNameValve.invoke(ThreadNameValve.java:61) ~[webinfra.tomcat-libs.jar:?]
at org.apache.catalina.valves.AccessLogValve.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.catalina.connector.CoyoteAdapter.service(Unknown Source) ~[catalina.jar:7.0.59]
at org.apache.coyote.ajp.AjpProcessor.process(Unknown Source) ~[tomcat-coyote.jar:7.0.59]
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(Unknown Source) ~[tomcat-coyote.jar:7.0.59]
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(Unknown Source) ~[tomcat-coyote.jar:7.0.59]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_102]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_102]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(Unknown Source) ~[tomcat-coyote.jar:7.0.59]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_102]