All reports of copyright-refers-to-nonexistent-license-file for the archive. The extended description of this tag is:

The copyright file refers to a license in /usr/share/common-licenses that doesn't exist. Usually this is a typo, such as accidentally omitting the - between the license name and the version number.

Severity: normal, Certainty: certain

Check: copyright-file, Type: binary

This tag has not been emitted in any package tested by Lintian.