Reverse Engineer failure: NPE

[arnieHouston]

Not sure what's going on here. Source DB: DB2.

java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at java.desktop/javax.swing.SwingWorker.get(SwingWorker.java:613)
at de.erdesignerng.visual.LongRunningTask.run(LongRunningTask.java:62)
Caused by: java.lang.NullPointerException
at de.erdesignerng.dialect.NameCastType.cast(NameCastType.java:79)
at de.erdesignerng.dialect.JDBCReverseEngineeringStrategy.reverseEngineerIndexAttribute(JDBCReverseEngineeringStrategy.java:511)
at de.erdesignerng.dialect.JDBCReverseEngineeringStrategy.reverseEngineerIndexes(JDBCReverseEngineeringStrategy.java:475)
at de.erdesignerng.dialect.JDBCReverseEngineeringStrategy.reverseEngineerTable(JDBCReverseEngineeringStrategy.java:340)
at de.erdesignerng.dialect.JDBCReverseEngineeringStrategy.updateModelFromConnection(JDBCReverseEngineeringStrategy.java:750)
at de.erdesignerng.visual.common.ReverseEngineerCommand$2.doWork(ReverseEngineerCommand.java:134)
at de.erdesignerng.visual.common.ReverseEngineerCommand$2.doWork(ReverseEngineerCommand.java:125)
at de.erdesignerng.visual.LongRunningTask$1.doInBackground(LongRunningTask.java:52)
at java.desktop/javax.swing.SwingWorker$1.call(SwingWorker.java:304)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.desktop/javax.swing.SwingWorker.run(SwingWorker.java:343)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:835)