I am using rpi-4-devuan-daedalus-6.1.63-arm64-ext4-2023-11-26-0507
and I have this error when trying to update and upgrade.

update-initramfs: Generating /boot/initrd.img-6.1.63
Creating initrd.gz.
cp: target '/boot/initrd.gz': No such file or directory
cp: target '/boot/broadcom/initrd.gz': No such file or directory
run-parts: /etc/initramfs/post-update.d//99-initrd exited with return code 1

Is this expected behaviour?  Can I fix it?

Any help will be much appreciated!

TIA,

Dave