Hi Team,

Although we try restart/start one of our custom agents in the production environment,it still gets failed with the below mentioned error message.

Exception at 20171123T125039.717 GMT: java.lang.NullPointerException at com.pega.pegarules.data.internal.access.PageDatabaseMapperImpl.decrypt(PageDatabaseMapperImpl.java:2500) at com.pega.pegarules.data.internal.access.PageDatabaseMapperImpl.getStreamBytes(PageDatabaseMapperImpl.java:2419) at com.pega.pegarules.data.internal.access.PageDatabaseMapperImpl.populatePageOrStringMapFromStreamColumn(PageDatabaseMapperImpl.java:2268) at com.pega.pegarules.data.internal.access.PageDatabaseMapperImpl.createPageFromResultSet(PageDatabaseMapperImpl.java:480) at com.pega.pegarules.data.internal.access.Opener.getResultFromResultSet(Opener.java:945) at com.pega.pegarules.data.internal.access.Opener.openData(Opener.java:716) at com.pega.pegarules.data.internal.access.Opener.openData(Opener.java:410) at com.pega.pegarules.data.internal.access.DatabaseImpl.open(DatabaseImpl.java:4484) at com.pega.pegarules.pub.runtime.AbstractActivity.objOpenByHandle(AbstractActivity.java:121) at com.pegarules.generated.activity.ra_action_validatependingfaxitemsandmovetowb_b68441779d968baff254bcbdbac76f53.step6_1_circum0(ra_action_validatependingfaxitemsandmovetowb_b68441779d968baff254bcbdbac76f53.java:731) at com.pegarules.generated.activity.ra_action_validatependingfaxitemsandmovetowb_b68441779d968baff254bcbdbac76f53.step6_0_circum0(ra_action_validatependingfaxitemsandmovetowb_b68441779d968baff254bcbdbac76f53.java:582) at com.pegarules.generated.activity.ra_action_validatependingfaxitemsandmovetowb_b68441779d968baff254bcbdbac76f53.perform(ra_action_validatependingfaxitemsandmovetowb_b68441779d968baff254bcbdbac76f53.java:152) at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:3500) at com.pega.pegarules.session.internal.async.agent.QueueProcessor.runActivity(QueueProcessor.java:721) at com.pega.pegarules.session.internal.async.agent.QueueProcessor.execute(QueueProcessor.java:602) at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:945) at com.pega.pegarules.session.internal.PRSessionProviderImpl.performTargetActionWithLock(PRSessionProviderImpl.java:1259) at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1008) at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:901) at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:670) at com.pega.jsr166backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:991) at com.pega.jsr166backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:532) at java.lang.Thread.run(Unknown Source)