am seeing below issue in newly setup env ( v8.4)... let us know if there is anything can be done to void.

FYI..

ERROR   - One or more properties could not be serialized during passivation and have therefore been lost. They will not be available on activation. Please ensure that all property data is Serializable com.pega.pegarules.session.external.mgmt.PageCannotBeSerializedForPassivationException: Unable to passivate page 'pzDeclarativesQueryResults' on thread 'TABTHREAD2' in requestor 'HTTOM1XJY9XHY1DY87XD12G8LAARPG06MA'. The following items were not serializable: [Property not serializable: "pzDeclarativesQueryResults.pxResultIterator" Class: "com.pega.pegarules.data.internal.access.ResultSetIteratorImpl"].     at com.pega.pegarules.session.internal.mgmt.base.NodeRequestorMgt.getPageAsBytes(NodeRequestorMgt.java:3476) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.NodeRequestorMgt.getPageAsBytes(NodeRequestorMgt.java:3430) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.NodeRequestorMgt.savePage(NodeRequestorMgt.java:918) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.ThreadPassivation$ThreadPagePassivator.passivate(ThreadPassivation.java:1004) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.handler.UserPageHandler.passivate(UserPageHandler.java:133) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.ThreadPassivation.passivateThread(ThreadPassivation.java:488) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.PRThreadImpl.passivateThread(PRThreadImpl.java:1262) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.NodeRequestorMgt.saveThread(NodeRequestorMgt.java:843) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.ThreadPassivation.cleanup(ThreadPassivation.java:390) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.PRThreadImpl.cleanup(PRThreadImpl.java:242) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.RequestorPassivation.cleanupThread(RequestorPassivation.java:890) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.RequestorPassivation.timeoutThread(RequestorPassivation.java:824) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.PRRequestorImpl.timeoutThread(PRRequestorImpl.java:913) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.mgmt.base.NodeRequestorMgt.processPassivationQueue(NodeRequestorMgt.java:2641) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.async.PassivationDaemon.processPassivationQueue(PassivationDaemon.java:373) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.async.PassivationDaemon.run(PassivationDaemon.java:347) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.PRSessionProviderImpl.performTargetActionWithLock(PRSessionProviderImpl.java:1397) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1140) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:947) ~[prprivate-session.jar:?]     at com.pega.pegarules.session.internal.async.PassivationDaemon.run(PassivationDaemon.java:309) ~[prprivate-session.jar:?]     at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]

***Edited by Moderator: Pallavi to change content type from Discussion to Question***