The fix for this bug is in the architecture all package, so you need to install initramfs-tools_0.103ubuntu4.2_all.deb and initramfs-tools-bin_0.103ubuntu4.2_ppc64el.deb.
The fix for this bug is in the architecture all package, so you need to install initramfs- tools_0. 103ubuntu4. 2_all.deb and initramfs- tools-bin_ 0.103ubuntu4. 2_ppc64el. deb.