There is a problem with upgrading the system-config-printer.
The error is as follows:
[1/23] Extracting system-config-printer-1.5.12_2: 3% pkg: Fail to create temporary file: /usr/local/lib/python3.8/site-packages/cupshelpers-1.0-py3.8.egg-info/.pkgtemp.PKG-INFO.gJdjcIc8ZNWR:Not a directory [1/23] Extracting system-config-printer-1.5.12_2: 100%
It is also a known issue on the FreeBSD project. Here is the FreeBSD Bugzilla ticket https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264445.