Preparing to unpack .../libpkcs11-helper1_1.22-2_amd64.deb ...
Unpacking libpkcs11-helper1:amd64 (1.22-2) ...
Selecting previously unselected package openvpn.
Preparing to unpack .../openvpn_2.4.3-4ubuntu1_amd64.deb ...
Unpacking openvpn (2.4.3-4ubuntu1) ...
Processing triggers for ureadahead (0.100.0-20) ...
Setting up libpkcs11-helper1:amd64 (1.22-2) ...
Setting up openvpn (2.4.3-4ubuntu1) ...
dpkg: error processing package openvpn (--configure):
 subprocess installed post-installation script was killed by signal (Killed)