Comment 2 for bug 1931954

Thank you for taking the time to file a bug report.

From the logs you posted, I can see that the failure is happening because of this:

Configurando clamav-milter (0.103.2+dfsg-0ubuntu0.20.04.2) ...
touch: no se puede efectuar `touch' sobre '/var/log/clamav/clamav-milter.log': No existe el archivo o el directorio

This means that dpkg tried to create the clamav-milter.log file under the directory /var/log/clamav/, but could not proceed because the directory doesn't exist. This directory is created when you install the clamav-base package. Based on your dpkg history log, it doesn't seem like you have removed clamav-base, so I think it should still be installed in your system. However, for some reason it seems like the /var/log/clamav/ directory got removed.

Did you perhaps remove this directory by hand? If yes, then that's the problem. You should reinstall the clamav-base package (by using "apt-get install --reinstall clamav-base", for example).

Since it seems likely to me that this is a local configuration problem,
rather than a bug in Ubuntu, I am marking this bug as 'Incomplete'.

However, if you believe that this is really a bug in Ubuntu, then we would
be grateful if you would provide a more complete description of the problem
with steps to reproduce, explain why you believe this is a bug in Ubuntu
rather than a problem specific to your system, and then change the bug
status back to "New".

For local configuration issues, you can find assistance here:
http://www.ubuntu.com/support/community