First I used the included dumpRdf.php to create the
RDF file, attached.
Then I did the munge step. It produced the errors, attached.
Notice something weird: in your RDF, the wdata prefix is:
Usually it is expected to be
Also, if you're running your own instance, you may want to set up a
different URL for wikidata prefix by setting conceptBaseUri (see
docs/options.wiki). You may then also want to use -w option for munger
to set up correct hostname for your setup and also -DwikibaseHost when
you're running Blazegraph/updater.