Lintian tag information: unexpected-conffile (type: error)

Description (from lintian-explain-tags)

The conffiles control file lists this path, but you should ship no such
file.

This condition presently occurs only when DEBIAN/conffiles includes the
instruction remove-on-upgrade.

Please refer to the deb-conffiles(5) manual page for details.

Visibility: error
Show-Always: no
Check: conffiles

Show affected packages