Preparing to unpack .../base-files_9.4ubuntu4.6_amd64.deb ...
Unpacking base-files (9.4ubuntu4.6) over (9.4ubuntu4.5) ...
Processing triggers for plymouth-theme-ubuntu-text (0.9.2-3ubuntu13.1) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for install-info (6.1.0.dfsg.1-5) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for initramfs-tools (0.122ubuntu8.8) ...
update-initramfs: Generating /boot/initrd.img-4.10.0-28-lowlatency
 Log started: 2018-03-30  16:53:47
dpkg: error processing package base-files (--configure):
 package base-files is already installed and configured