All updates and upgrades are done via Debian apt-update && apt-upgrade. Has worked for years without issue.
Both Webmin and Usermin are working as planned - so this looks like something in the installation upgrade/cleanup did not complete correctly.
Last updates leave the folders in /(webmin)or(usermin)/DEBIAN/…
/webmin-2.101/DEBIAN/changelog
/webmin-2.101/DEBIAN/conffiles
/webmin-2.101/DEBIAN/control
/webmin-2.101/DEBIAN/copyright
/webmin-2.101/DEBIAN/postinst
/webmin-2.101/DEBIAN/postrm
/webmin-2.101/DEBIAN/preinst
/webmin-2.101/DEBIAN/prerm
/etc/apt/sources.list.d/webmin.list:deb [signed-by=/usr/share/keyrings/debian-webmin-developers.gpg] Index of /download/newkey/repository stable contrib
Not getting any other error messages. Have just deleted the extra directories – (.orig) too. All is working fine.