Hello all. I migrated the database from a Liferay Portal 7.4.3.132-ga132 instance to Liferay DXP 2025.q1.22-lts and then to Liferay DXP 2026.q1.2-lts. Everything completed successfully and without errors.
I use a Free Tier license key.
The new Liferay DXP 2026.q1.2-lts instance starts without errors, but when I connect for the first time, I get the following error. After that, everything works normally.
Can anyone tell me which direction to look for to avoid the following error?
INFO [main][c:-1] DXP Production license validation passed
INFO [main][AutoDeployDir:152] Auto deploy scanner started for D:\dev\liferay\2026.q1.2-lts\liferay-dxp-nt103\deploy
INFO [SystemExecutorServiceUtil-5][Sidecar:210] Sidecar Elasticsearch 8.19.11 liferay_sidecar started at 127.0.0.1:9201
INFO [liferay/background_task-2][BackgroundTaskMessageListener:131] Unable to acquire lock, queuing background task 282543
INFO [liferay/background_task-3][BackgroundTaskMessageListener:131] Unable to acquire lock, queuing background task 282544
ERROR [com.liferay.portal.workflow.metrics.internal.petra.executor.WorkflowMetricsPortalExecutor-2][WorkflowMetricsPortalExecutor:63] java.lang.NullPointerException: Cannot invoke “com.liferay.portal.workflow.metrics.search.index.reindexer.WorkflowMetricsReindexer.reindex(long)” because “workflowMetricsReindexer” is null
java.lang.NullPointerException: Cannot invoke “com.liferay.portal.workflow.metrics.search.index.reindexer.WorkflowMetricsReindexer.reindex(long)” because “workflowMetricsReindexer” is null
at com.liferay.portal.workflow.metrics.internal.background.task.WorkflowMetricsReindexBackgroundTaskExecutor.lambda$execute$0(WorkflowMetricsReindexBackgroundTaskExecutor.java:106) ~[?:?]
at com.liferay.portal.workflow.metrics.internal.petra.executor.WorkflowMetricsPortalExecutor.lambda$execute$0(WorkflowMetricsPortalExecutor.java:60) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) ~[?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
at java.lang.Thread.run(Thread.java:1583) [?:?]
ERROR [liferay/background_task-4][BackgroundTaskMessageListener:162] Unable to execute background task
java.lang.NullPointerException: Cannot invoke “com.liferay.portal.kernel.backgroundtask.BackgroundTaskExecutor.getIsolationLevel()” because “backgroundTaskExecutor” is null
at com.liferay.portal.background.task.internal.lock.helper.BackgroundTaskLockHelper._getLockKey(BackgroundTaskLockHelper.java:58) ~[?:?]
at com.liferay.portal.background.task.internal.lock.helper.BackgroundTaskLockHelper.unlockBackgroundTask(BackgroundTaskLockHelper.java:47) ~[?:?]
at com.liferay.portal.background.task.internal.SerialBackgroundTaskExecutor.execute(SerialBackgroundTaskExecutor.java:58) ~[?:?]
at com.liferay.portal.kernel.backgroundtask.DelegatingBackgroundTaskExecutor.execute(DelegatingBackgroundTaskExecutor.java:32) ~[portal-kernel.jar:?]
at com.liferay.portal.background.task.internal.ThreadLocalAwareBackgroundTaskExecutor.execute(ThreadLocalAwareBackgroundTaskExecutor.java:66) ~[?:?]
at com.liferay.portal.background.task.internal.messaging.BackgroundTaskMessageListener.doReceive(BackgroundTaskMessageListener.java:115) ~[?:?]
at com.liferay.portal.kernel.messaging.BaseMessageListener.doReceive(BaseMessageListener.java:39) ~[portal-kernel.jar:?]
at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:25) ~[portal-kernel.jar:?]
at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:62) ~[portal-kernel.jar:?]
at com.liferay.portal.messaging.internal.ParallelDestination$1.run(ParallelDestination.java:47) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
at java.lang.Thread.run(Thread.java:1583) [?:?]