[GeoNetwork-users] harvesting in GN 2 from GN 3 instance

Hello

I have updated one instance of GN to 3.0.2 and trying if harvesting of metadata is still working.

When harvesting in GN 2.10.1 from GN 3.0.2, I doesn't seem to work (see error below)
The other way around does work. Is it possible to harvest from a newer GN instance?

The error is
java.lang.NullPointerException
    at org.fao.geonet.kernel.harvest.harvester.geonet.Aligner.<init>(Aligner.java:84)
    at org.fao.geonet.kernel.harvest.harvester.geonet.Harvester.harvest(Harvester.java:133)
    at org.fao.geonet.kernel.harvest.harvester.geonet.GeonetHarvester.doHarvest(GeonetHarvester.java:266)
    at org.fao.geonet.kernel.harvest.harvester.AbstractHarvester$HarvestWithIndexProcessor.process(AbstractHarvester.java:400)
    at org.fao.geonet.kernel.harvest.harvester.AbstractHarvester.harvest(AbstractHarvester.java:470)
    at org.fao.geonet.kernel.harvest.harvester.HarvesterJob.execute(HarvesterJob.java:29)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
    at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:557)

best regards,
Ger