I'd like to first rule out that this is not a duplicate of the following bug:
https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1685984
Do you have Sophos AV installed? If so, please try disabling it temporarily and retry the update:
/opt/sophos-av/bin/savdctl disable
I'd like to first rule out that this is not a duplicate of the following bug:
https:/ /bugs.launchpad .net/ubuntu/ +source/ dpkg/+bug/ 1685984
Do you have Sophos AV installed? If so, please try disabling it temporarily and retry the update:
/opt/sophos- av/bin/ savdctl disable