переустановите spamassassin (сломанный perl)

spamassassin был сломан на моем Ubuntu 20.10, и я не могу его переустановить.

я сделал

      dpkg --purge spamassassin sa-compile spamc
deluser --remove-all-files debian-spamd
apt update
apt upgrade
apt install spamassassin

и получаю ошибки:

      Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  sa-compile spamc
Suggested packages:
  razor libdbi-perl pyzor libencode-detect-perl libgeoip2-perl libnet-patricia-perl
  libbsd-resource-perl
The following NEW packages will be installed
  sa-compile spamassassin spamc
0 to upgrade, 3 to newly install, 0 to remove and 0 not to upgrade.
Need to get 0 B/1,235 kB of archives.
After this operation, 4,902 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Selecting previously unselected package spamassassin.
(Reading database ... 271754 files and directories currently installed.)
Preparing to unpack .../spamassassin_3.4.5~pre1-3_all.deb ...
Unpacking spamassassin (3.4.5~pre1-3) ...
Selecting previously unselected package sa-compile.
Preparing to unpack .../sa-compile_3.4.5~pre1-3_all.deb ...
Unpacking sa-compile (3.4.5~pre1-3) ...
Selecting previously unselected package spamc.
Preparing to unpack .../spamc_3.4.5~pre1-3_amd64.deb ...
Unpacking spamc (3.4.5~pre1-3) ...
Setting up spamc (3.4.5~pre1-3) ...
Setting up spamassassin (3.4.5~pre1-3) ...
Adding system user `debian-spamd' (UID 131) ...
Adding new group `debian-spamd' (GID 136) ...
Adding new user `debian-spamd' (UID 131) with group `debian-spamd' ...
Not creating home directory `/var/lib/spamassassin'.
Insecure dependency in sprintf while running with -T switch at /usr/lib/x86_64-linux-gnu/perl/5.30/Con
fig.pm line 62.
Compilation failed in require at /usr/lib/x86_64-linux-gnu/perl/5.30/lib.pm line 6.
BEGIN failed--compilation aborted at /usr/lib/x86_64-linux-gnu/perl/5.30/lib.pm line 6.
Compilation failed in require at /usr/bin/sa-update line 36.
BEGIN failed--compilation aborted at /usr/bin/sa-update line 36.
dpkg: error processing package spamassassin (--configure):
 installed spamassassin package post-installation script subprocess returned error exit status 255
dpkg: dependency problems prevent configuration of sa-compile:
 sa-compile depends on spamassassin; however:
  Package spamassassin is not configured yet.

dpkg: error processing package sa-compile (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates it's a follow-up error from a previous fa
ilure.
      Processing triggers for man-db (2.9.3-2) ...
Processing triggers for systemd (246.6-1ubuntu1.4) ...
Errors were encountered while processing:
 spamassassin
 sa-compile
E: Sub-process /usr/bin/dpkg returned an error code (1)

Как установить пакет spamassassin Ubuntu сейчас?

Я также проверил это (на другой машине): установить 20.04 LTS, обновить до 20.10, установить spamassassin, все работает, поэтому проблема с правильной очисткой.

В рабочей установке установлен Perl v5.30.3, а в нерабочей — v5.30.0 (хотя согласно apt update).

Несоответствие версии Perl на неработающей Ubuntu:

      sudo cpan
/usr/bin/cpan: Perl lib version (5.30.3) doesn't match executable     '/usr/bin/perl' version (5.30.0) at /usr/lib/x86_64-linux-gnu/perl/5.30/Config.pm line 62.

Compilation failed in require at /usr/share/perl/5.30/CPAN.pm line 44.

Как мне обновить установку Perl