Failed to reindex from upgrading from 7.1.2 to 8.4.2

Failed to reindex after upgrade.

Failed again even after inputting new licence. deleting $JIRA_HOME\caches and run full index

==

Re-indexing

Errors

The re-index did not complete successfully. Please refer to Jira logs for more details.

Jira Indexing
Currently working on: PortalPage index: Re-indexing is 20% complete.
Task completed in 0 seconds
Started 1 hour ago.
Finished 1 hour ago.

=====================From catalina.out ===

2019-10-09 05:47:38,228 JIRA-Bootstrap INFO [c.a.jira.upgrade.LicenseCheckingUpgradeService]

*******************************************************************
Upgrade Succeeded! JIRA has been upgraded to build number 804000
*******************************************************************

2019-10-09 05:47:38,234 JIRA-Bootstrap INFO [c.a.jira.upgrade.UpgradeIndexManager] Requesting immediate reindex
2019-10-09 05:47:40,322 JIRA-Bootstrap ERROR [c.a.jira.upgrade.LicenseCheckingUpgradeService] An exception occurred when running to call a callable method, this shouldn't happen.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: com.atlassian.jira.index.IndexingFailureException: Indexing completed with 1 errors
at com.atlassian.jira.index.request.DefaultReindexRequestManager.reindex(DefaultReindexRequestManager.java:243)
at com.atlassian.jira.index.request.DefaultReindexRequestManager.performReindex(DefaultReindexRequestManager.java:214)
at com.atlassian.jira.index.request.DefaultReindexRequestManager.performReindex(DefaultReindexRequestManager.java:204)
at com.atlassian.jira.index.request.DefaultReindexRequestManager.processPendingRequests(DefaultReindexRequestManager.java:180)
at com.atlassian.jira.upgrade.UpgradeIndexManager.executeImmediateReindex(UpgradeIndexManager.java:136)
at com.atlassian.jira.upgrade.UpgradeIndexManager.executeReindex(UpgradeIndexManager.java:127)
at com.atlassian.jira.upgrade.UpgradeIndexManager.runReindexIfNeededAndAllowed(UpgradeIndexManager.java:67)
at com.atlassian.jira.upgrade.LicenseCheckingUpgradeService.executeUpgrades(LicenseCheckingUpgradeService.java:147)
at com.atlassian.jira.upgrade.LicenseCheckingUpgradeService.runUpgrades(LicenseCheckingUpgradeService.java:97)
at com.atlassian.jira.upgrade.ClusterLockingUpgradeService.runUpgrades(ClusterLockingUpgradeService.java:35)
at com.atlassian.jira.upgrade.LoggingUpgradeService.lambda$runUpgradesWithLogging$0(LoggingUpgradeService.java:28)
at com.atlassian.jira.upgrade.LoggingUpgradeService.runWithTaskLogging(LoggingUpgradeService.java:43)
at com.atlassian.jira.upgrade.LoggingUpgradeService.runUpgradesWithLogging(LoggingUpgradeService.java:28)
at com.atlassian.jira.upgrade.IndexingUpgradeService.runUpgrades(IndexingUpgradeService.java:19)
at com.atlassian.jira.upgrade.DefaultUpgradeService.runUpgrades(DefaultUpgradeService.java:56)
at com.atlassian.jira.upgrade.UpgradeLauncher.upgradeIfNeeded(UpgradeLauncher.java:109)
at com.atlassian.jira.upgrade.UpgradeLauncher.start(UpgradeLauncher.java:86)
at com.atlassian.jira.startup.ActiveServicesLauncher.start(ActiveServicesLauncher.java:50)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDBActivated(DefaultJiraLauncher.java:172)
at com.atlassian.jira.startup.DefaultJiraLauncher.lambda$postDbLaunch$2(DefaultJiraLauncher.java:146)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrEnqueue(DatabaseConfigurationManagerImpl.java:301)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrWhenDatabaseActivated(DatabaseConfigurationManagerImpl.java:196)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDbLaunch(DefaultJiraLauncher.java:137)
at com.atlassian.jira.startup.DefaultJiraLauncher.lambda$start$0(DefaultJiraLauncher.java:104)
at com.atlassian.jira.util.devspeed.JiraDevSpeedTimer.run(JiraDevSpeedTimer.java:31)
at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:102)
at com.atlassian.jira.startup.LauncherContextListener.initSlowStuff(LauncherContextListener.java:154)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.ExecutionException: com.atlassian.jira.index.IndexingFailureException: Indexing completed with 1 errors
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at com.atlassian.jira.task.TaskManagerImpl.waitUntilTaskCompletes(TaskManagerImpl.java:348)
at com.atlassian.jira.index.request.TaskDescriptorHelper.waitForTaskCompletion(TaskDescriptorHelper.java:47)
at com.atlassian.jira.index.request.DefaultReindexRequestManager.reindex(DefaultReindexRequestManager.java:241)
Caused by: com.atlassian.jira.index.IndexingFailureException: Indexing completed with 1 errors
at com.atlassian.jira.util.index.CompositeIndexLifecycleManager.reIndexAll(CompositeIndexLifecycleManager.java:83)
at com.atlassian.jira.util.index.CompositeIndexLifecycleManager.reIndexAll(CompositeIndexLifecycleManager.java:49)
at com.atlassian.jira.web.action.admin.index.ReIndexAsyncIndexerCommand.doReindex(ReIndexAsyncIndexerCommand.java:27)
at com.atlassian.jira.web.action.admin.index.AbstractAsyncIndexerCommand.call(AbstractAsyncIndexerCommand.java:63)
at com.atlassian.jira.web.action.admin.index.ReIndexAsyncIndexerCommand.call(ReIndexAsyncIndexerCommand.java:18)
at com.atlassian.jira.index.request.DefaultReindexRequestManager$RunReindexAndUpdateRequestTask.call(DefaultReindexRequestManager.java:546)
at com.atlassian.jira.index.request.DefaultReindexRequestManager$RunReindexAndUpdateRequestTask.call(DefaultReindexRequestManager.java:531)
at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:537)
at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:495)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.atlassian.jira.task.ForkedThreadExecutor$ForkedRunnableDecorator.run(ForkedThreadExecutor.java:216)