xmlto has:

Suggests: w3m | lynx-cur | links, texlive-htmlxml

but texlive-htmlxml is now a transitional dummy package.

This dependency should be updated.

We believe that the bug you reported is fixed in the latest version of
xmlto, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 867528@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
ChangZhuo Chen (陳昌倬) <czchen@debian.org> (supplier of updated xmlto package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 02 Aug 2025 01:05:05 +0800
Source: xmlto
Architecture: source
Version: 0.0.29-2
Distribution: unstable
Urgency: medium
Maintainer: ChangZhuo Chen (陳昌倬) <czchen@debian.org>
Changed-By: ChangZhuo Chen (陳昌倬) <czchen@debian.org>
Closes: 867528
Changes:
 xmlto (0.0.29-2) unstable; urgency=medium
 .
   * Remove transitional dummy package (Closes: #867528).
   * Ensure shebang for bash is /bin/bash.
   * d/salsa-ci.yml: Add Salsa CI config.
   * d/control: wrap-and-sort.
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