Error Message :
Loading task data failed. Refer to log for details.
java.lang.IllegalArgumentException: Comparison method violates its general contract!

When installing Process Analytics version 11.1.0 Build 1 (Admin + Studio) on an Automation Engine database 11.2.X the following error may appear:
 

<Please see attached file for image>

U6002135 Error while loading data:
java.lang.IllegalArgumentException: Comparison method violates its general contract!	
at java.util.ComparableTimSort.mergeHi(ComparableTimSort.java:835)	
at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:453)	
at java.util.ComparableTimSort.mergeCollapse(ComparableTimSort.java:376)	
at java.util.ComparableTimSort.sort(ComparableTimSort.java:182)	
at java.util.ComparableTimSort.sort(ComparableTimSort.java:146)	
at java.util.Arrays.sort(Arrays.java:472)	
at java.util.Collections.sort(Collections.java:155)	
at com.uc4.gwa.studio.modules.datamanagement.cmd.ForecastHidingHelper.reduceResultSet(Unknown Source)	
at com.uc4.gwa.studio.modules.datamanagement.cmd.ReloadDataCommand.loadData(Unknown Source)	
at com.uc4.gwa.studio.modules.datamanagement.cmd.ReloadDataCommand.execute(Unknown Source)	
at com.uc4.gwa.studio.modules.datamanagement.cmd.ReloadDataCommand.execute(Unknown Source)	
at com.senactive.common.commanding.RunnableCommandWrapper.run(Unknown Source)	
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	
at java.util.concurrent.FutureTask.run(FutureTask.java:262)	
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	
at java.lang.Thread.run(Thread.java:744)

Cause type:
Other
Root Cause: Clicking on the Reload button shows an error message instead of reloading the chart.

OS Version: N/A

Update to a fix version listed below or a newer version if available.
 

Fix Status: Released

Fix Version(s):
Process Analytics 12.0.0 - Available
Process Analytics 11.1.1 - Available

Workaround :
N/A