Parsing file /var/tmp/CGItemp62393.dir/links+json.xml
Resolving entity... /usr/local/lib/python2.7/dist-packages/xml2rfc/templates/rfc2629.dtd
Resolving entity... /usr/local/lib/python2.7/dist-packages/xml2rfc/templates/rfc2629-xhtml.ent
Resolving entity... /usr/local/lib/python2.7/dist-packages/xml2rfc/templates/rfc2629-other.ent
Resolving entity... /usr/local/lib/python2.7/dist-packages/xml2rfc/templates/rfc2629.dtd
Resolving entity... /usr/local/lib/python2.7/dist-packages/xml2rfc/templates/rfc2629-xhtml.ent
Resolving entity... /usr/local/lib/python2.7/dist-packages/xml2rfc/templates/rfc2629-other.ent
Resolving entity... http://xml.resource.org/public/rfc/bibxml/reference.RFC.2119.xml
Loaded from cache /tmp/reference.RFC.2119.xml
Resolving entity... http://xml.resource.org/public/rfc/bibxml/reference.RFC.6838.xml
Loaded from cache /tmp/reference.RFC.6838.xml
Resolving entity... http://xml.resource.org/public/rfc/bibxml/reference.RFC.7230.xml
Loaded from cache /tmp/reference.RFC.7230.xml
Resolving entity... http://xml.resource.org/public/rfc/bibxml/reference.RFC.7231.xml
Loaded from cache /tmp/reference.RFC.7231.xml
Resolving entity... http://xml.resource.org/public/rfc/bibxml/reference.RFC.8259.xml
Loaded from cache /tmp/reference.RFC.8259.xml
Resolving entity... http://xml.resource.org/public/rfc/bibxml/reference.RFC.8288.xml
Loaded from cache /tmp/reference.RFC.8288.xml
ERROR: Unable to validate the XML document: /var/tmp/CGItemp62393.dir/links+json.xml
<string>: Line 77: Element xref does not carry attribute target
<string>: Line 77: No declaration for attribute targ of element xref
<string>: Line 150: IDREF attribute target references an unknown ID "rfc7230"