org.apache.jena.atlas.lib.InternalErrorException: Invalid id node for object (null node):

[Reto Bachmann-Gmür]

Hello,

I've been encountering the following exception. I think it happened after
the instance was killed. WHat does it mean? How to fix it?

org.apache.jena.atlas.lib.InternalErrorException: Invalid id node for
object (null node): ([000000000000025E], [000000000000019C],
[0000000000000321])
        at com.hp.hpl.jena.tdb.lib.TupleLib.triple(TupleLib.java:139)
        at com.hp.hpl.jena.tdb.lib.TupleLib.triple(TupleLib.java:114)
        at com.hp.hpl.jena.tdb.lib.TupleLib.access$000(TupleLib.java:45)
        at com.hp.hpl.jena.tdb.lib.TupleLib$3.convert(TupleLib.java:76)
        at com.hp.hpl.jena.tdb.lib.TupleLib$3.convert(TupleLib.java:72)
        at org.apache.jena.atlas.iterator.Iter$4.next(Iter.java:317)
        at org.apache.jena.atlas.iterator.Iter$4.next(Iter.java:317)
        at org.apache.jena.atlas.iterator.Iter$4.next(Iter.java:317)
        at org.apache.jena.atlas.iterator.Iter.next(Iter.java:915)
        at
com.hp.hpl.jena.util.iterator.WrappedIterator.next(WrappedIterator.java:94)

Cheers,
Reto