Startup errors after installing DXP 7.2 Fix Pack 20

Issue

After upgrading to Fix Pack 20, several errors related to Data Engine are thrown:

ERROR [Framework Event Dispatcher: Equinox Container: 0e2749fb-bcdd-4fbb-a731-5b616e580bfb][Framework:93] FrameworkEvent ERROR java.lang.IllegalStateException: DEFAULT is already registered at 
com.liferay.batch.engine.internal.BatchEngineTaskMethodRegistryImpl$BatchEngineTaskMethodServiceTrackerCustomizer.addingService(BatchEngineTaskMethodRegistryImpl.java:132)[beanshell] at 
com.liferay.batch.engine.internal.BatchEngineTaskMethodRegistryImpl$BatchEngineTaskMethodServiceTrackerCustomizer.addingService(BatchEngineTaskMethodRegistryImpl.java:106)

ERROR [main][DataRecordResourceImpl:93] bundle com.liferay.data.engine.rest.impl:1.0.62 (114)[com.liferay.data.engine.rest.internal.resource.v1_0.DataRecordResourceImpl(3357)] : The _dataStorageTracker field has thrown an exception

Environment

DXP 7.2 FP20

Resolution

• Liferay Plugin for Data Engine has been converted from a standalone app to a core/required app as of DXP 7.2 Fix Pack 20. See the description of LPS-162210.
• Before installing this Fix Pack, remove the following packages:

LIFERAY_HOME/osgi/marketplace/Liferay Data Engine - API.lpkg

LIFERAY_HOME/osgi/marketplace/Liferay Data Engine - SPI.lpkg

LIFERAY_HOME/osgi/marketplace/Liferay Data Engine - Impl.lpkg

• Delete the following folder

LIFERAY_HOME/osgi/state

• Start the bundle