Comment (by Michal Pirog):

Though in your case, you have a typo (make is case sensitive): the thorn is DNSdata (lowercase “d”), not DNSData.

I'm so embarrassed... It works... Thank you (for both, an advice and patience).

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2747/inclusion-of-sgrid-importer-in-einstein