Nagging error: 'unable to extract attributes, unknown XML object type: saml2p:Response'

[Peter Schober]

* Paul Wilt <pewilt at gmail.com> [2016-12-02 16:10]:
> I have been trying figure out why we are getting this error in our
> shibd.log for the French federation (renater.fr):

1. because it's not an error
2. because you're running on DEBUG

> ==============================[ Begin: Error message ]=============================
> 2016-11-30 10:44:38 DEBUG Shibboleth.AttributeExtractor.XML [7]: unable to
> extract attributes, unknown XML object type: saml2p:Response
> 2016-11-30 10:44:38 DEBUG Shibboleth.AttributeExtractor.XML [7]: skipping
> unmapped NameID with format
> (urn:oasis:names:tc:SAML:2.0:nameid-format:transient)
> 2016-11-30 10:44:38 DEBUG Shibboleth.AttributeExtractor.XML [7]: unable to
> extract attributes, unknown XML object type: saml2:AuthnStatement
> ==============================[ End: Error message ]=============================

the word "DEBUG" in the line means it's a DEBUG-level message.
not an error, that would contain the word "ERROR as log level.

> I checked back through our signature.log and it appears that this
> started happening on 2016-07-11 (July 11).

Then someone probably forgot to disable DEBUG logging 6 months ago.
-peter