I added 'extraInfo' to the output. At first the 'extraInfo" field told me I needed to create a unique constraint as below (this is in the manual too):
CREATE CONSTRAINT n10s_unique_uri ON (r:Resource) ASSERT r.uri IS UNIQUE
the next time I ran it, it told me I needed a configuration (also in the manual). I added a default one:
CALL n10s.graphconfig.init()
It worked for me after adding these two things.
here is my environment:
