All reports of conffile-has-bad-file-type for the archive. The extended description of this tag is:
The conffiles lists this path, which is not a file. This will almost certainly not work.
Note that dpkg does not support symlinks being conffiles.
Refer to https://bugs.debian.org/690051 and https://bugs.debian.org/690910 for details.
This tag has not been emitted in any package tested by Lintian.