Setting up initramfs-tools (0.122ubuntu8.5) ...
update-initramfs: deferring update (trigger activated)
Setting up linux-image-4.4.0-47-generic (4.4.0-47.68) ...
Processing triggers for initramfs-tools (0.122ubuntu8.5) ...
update-initramfs: Generating /boot/initrd.img-4.4.0-47-generic
E: /usr/share/initramfs-tools/hooks/kbd failed with return 1.