7MTT Error 01061 job failed - Reason: A technical error has occurred

Hi guys,

Has anyone experienced the following problem with 7MTT at the Pre-Cutover phase?

https://kb.netapp.com/app/answers/answer_view/a_id/1008069/~/7mtt-error-01061-job-failed.-reason%3A-a-technical-error-has-occurred.-contact

The problem is that I couldn't find any invalid character in configuration mentioned in the above KB (the possible reason).

Source:     8.2.5 - 7-Mode 

Destination: Ontap 9.1P19

The only usable log I found is the following:

java.lang.IllegalArgumentException: Illegal group reference: group index is missing
at java.util.regex.Matcher.appendReplacement(Unknown Source) ~[na:1.8.0_144]
at java.util.regex.Matcher.replaceFirst(Unknown Source) ~[na:1.8.0_144]
at java.lang.String.replaceFirst(Unknown Source) ~[na:1.8.0_144]
at com.netapp.transition.operations.AbstractOp.getClusterPathFor7ModePath(AbstractOp.java:350) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.apply.CifsVolumeConfigApplyHandler.applyShareConfig(CifsVolumeConfigApplyHandler.java:203) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.apply.CifsVolumeConfigApplyHandler.execute(CifsVolumeConfigApplyHandler.java:128) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.TransitionApplyOp.applyCifsConfigurations(TransitionApplyOp.java:164) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.TransitionApplyOp.execute(TransitionApplyOp.java:103) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.complete.CTAHelper.apply(CTAHelper.java:102) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.complete.TransitionPrecutoverHandler.doCTA(TransitionPrecutoverHandler.java:343) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.complete.TransitionPrecutoverHandler.execute(TransitionPrecutoverHandler.java:129) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.TransitionPrecutoverOp.performPreCutover(TransitionPrecutoverOp.java:290) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.operations.TransitionPrecutoverOp.execute(TransitionPrecutoverOp.java:160) ~[transition-operations.jar:3.3.1]
at com.netapp.transition.jobmanager.PrecutoverJob.performPreCutover(PrecutoverJob.java:141) ~[transition-job-manager.jar:3.3.1]
at com.netapp.transition.jobmanager.PrecutoverJob.execute(PrecutoverJob.java:97) ~[transition-job-manager.jar:3.3.1]
at com.netapp.transition.jobmanager.AbstractJob.run(AbstractJob.java:203) ~[transition-job-manager.jar:3.3.1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_144]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_144]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_144]

Any ideas about what is happening here?

Thanks a lot!!!