java.lang.IllegalArgumentException: requirement failed: UserObject must not be null
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Hi, How to identify the root cause for the below error? ERROR - ActionManager: Exception in execution of monitored action 'Unnamed-Action-119220' (execution id: 751863ec-ed18-4ba6-9f28-771dcc361f37, execution type: SCHEDULED_EVENT) ERROR - ActionManager: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.core.CoreRuntimeException: Exception occurred in action '{"description":"cleanup expired sessions from the database","type":"ClusterLeaderManagementAction"}', all database changes executed by this action were rolled back at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:110) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.core.CoreRuntimeException: Exception occurred in action '{"description":"cleanup expired sessions from the database","type":"ClusterLeaderManagementAction"}', all database changes executed by this action were rolled back at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:23) Caused by: com.mendix.core.CoreRuntimeException: Exception occurred in action '{"description":"cleanup expired sessions from the database","type":"ClusterLeaderManagementAction"}', all database changes executed by this action were rolled back at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.processErrorState(CoreActionHandlerImpl.scala:153) Caused by: java.lang.IllegalArgumentException: requirement failed: UserObject must not be null.