Can't validate "www" for domains

Might have been a typo on my part. Just ran it again and received this output:

Failed authorization procedure. www.mlcnfriends.com (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://www.mlcnfriends.com/.well-known/acme-challenge/IAkwPvU60zszg1hRAhZtUPQMAdGfbK2Y7Bi6_jcx3c8: "

404 Not Found

404 Not Found


"

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