Post upgrade unable to start the Windchill PDMLink 12.1

• Unable to start the Windchill server after upgrade to 12.1
• MethodServer log shows the below error:

<Date/TIme> DEBUG [main] wt.access.evaluation.report  - <= hasAccess is true: wcadmin, object = Organization - <OrgName> (Site) (wt.org.WTOrganization:276), permission = Read
<Date/TIme> INFO  [main] wt.licenseusage.StandardLicenseUsageService  - start initializing license cache
<Date/Time> DEBUG [main] wt.access.evaluation.report  - => hasAccess: wcadmin, object = Schedule Queue Entry - 54623562 (ScheduleQueue Entry) (wt.queue.ScheduleQueueEntry:597744004), permission = Read
<Date/Time> DEBUG [main] wt.access.evaluation.report  -    type = WCTYPE|wt.queue.ScheduleQueueEntry, domain = null (<****>)
<Date/Time> DEBUG [main] wt.access.evaluation.report  -    checking for policy access ...
<Date/Time> DEBUG [main] wt.access.evaluation.policyACL  - => getPolicyAcl - IN: = <****>, wt.queue.ScheduleQueueEntry
<Date/Time> ERROR [main] wt.licenseusage.licensing.StandardLicenseManagerService  - wt.licenseusage.licensing.StandardLicenseManagerService: Error creating FeatureLicenseUpdateQueue schedule queue entry
<Date/Time> INFO  [main] wt.system.err  - java.lang.NullPointerException
<Date/Time> INFO  [main] wt.system.err  -     at wt.access.AccessSelector.getQuerySpec(AccessSelector.java:346)
<Date/Time> INFO  [main] wt.system.err  -     at wt.access.AccessSelector.getQuerySpec(AccessSelector.java:312)
<Date/Time> INFO  [main] wt.system.err  -     at wt.access.StandardAccessControlManager.getPolicyAcl(StandardAccessControlManager.java:2342)
<Date/Time> INFO  [main] wt.system.err  -     at wt.access.StandardAccessControlManager.getPolicyAcl(StandardAccessControlManager.java:4270)
<Date/Time> INFO  [main] wt.system.err  -     at wt.access.StandardAccessControlManager._hasAccess(StandardAccessControlManager.java:10719)
<Date/Time> INFO  [main] wt.system.err  -     at wt.access.StandardAccessControlManager.hasAccess(StandardAccessControlManager.java:536)
<Date/Time> INFO  [main] wt.system.err  -     at jdk.internal.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
<Date/Time> INFO  [main] wt.system.err  -     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
<Date/Time> INFO  [main] wt.system.err  -     at java.base/java.lang.reflect.Method.invoke(Method.java:566)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
<Date/Time> INFO  [main] wt.system.err  -     at com.sun.proxy.$Proxy66.hasAccess(Unknown Source)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pds.SurrogateAccessController.checkAccess(SurrogateAccessController.java:94)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pds.CompositeAccessController.checkAccess(CompositeAccessController.java:125)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pds.StandardACProcessor.processResults(StandardACProcessor.java:130)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pds.SequentialResultBuilder.build(SequentialResultBuilder.java:453)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pds.BasicResultCursor.next(BasicResultCursor.java:93)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pds.SQLDatabasePds.query(SQLDatabasePds.java:880)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pom.PersistentObjectManager.query(PersistentObjectManager.java:1077)
<Date/Time> INFO  [main] wt.system.err  -     at wt.pom.PersistentObjectManager.query(PersistentObjectManager.java:986)
<Date/Time> INFO  [main] wt.system.err  -     at wt.fc.StandardPersistenceManager._query(StandardPersistenceManager.java:1972)
<Date/Time> INFO  [main] wt.system.err  -     at wt.fc.StandardPersistenceManager._find(StandardPersistenceManager.java:2008)
<Date/Time> INFO  [main] wt.system.err  -     at wt.fc.StandardPersistenceManager.find(StandardPersistenceManager.java:655)
<Date/Time> INFO  [main] wt.system.err  -     at wt.fc.StandardPersistenceManager.find(StandardPersistenceManager.java:407)
<Date/Time> INFO  [main] wt.system.err  -     at jdk.internal.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
<Date/Time> INFO  [main] wt.system.err  -     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
<Date/Time> INFO  [main] wt.system.err  -     at java.base/java.lang.reflect.Method.invoke(Method.java:566)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
<Date/Time> INFO  [main] wt.system.err  -     at com.sun.proxy.$Proxy27.find(Unknown Source)
<Date/Time> INFO  [main] wt.system.err  -     at wt.licenseusage.licensing.UpdateLicenseFeature.checkExistsQueueEntry(UpdateLicenseFeature.java:151)
<Date/Time> INFO  [main] wt.system.err  -     at wt.licenseusage.licensing.UpdateLicenseFeature.addQueueEntry(UpdateLicenseFeature.java:96)
<Date/Time> INFO  [main] wt.system.err  -     at wt.licenseusage.licensing.UpdateLicenseFeature.addQueueEntry(UpdateLicenseFeature.java:80)
<Date/Time> INFO  [main] wt.system.err  -     at wt.licenseusage.licensing.StandardLicenseManagerService.initializeQueue(StandardLicenseManagerService.java:221)
<Date/Time> INFO  [main] wt.system.err  -     at wt.licenseusage.licensing.StandardLicenseManagerService.performStartupProcess(StandardLicenseManagerService.java:156)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.StandardManager.startup(StandardManager.java:459)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.ManagerImplementation.startup(ManagerImplementation.java:363)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.DefaultStartupHandler.startup(DefaultStartupHandler.java:112)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.StandardManagerService.performStartupProcess(StandardManagerService.java:167)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.StandardManager.startup(StandardManager.java:459)
<Date/Time> INFO  [main] wt.system.err  -     at wt.services.StandardServicesHandler.start(StandardServicesHandler.java:44)
<Date/Time> INFO  [main] wt.system.err  -     at wt.method.MethodServerMain.run(MethodServerMain.java:584)
<Date/Time> INFO  [main] wt.system.err  -     at wt.method.MethodServerMain.main(MethodServerMain.java:353)