I am trying to build a basic i386 iso, no blend, but fail with the following errors:

tee: /path/to/devuan_sdk/live-sdk/tmp/devuan-i386-build/bootstrap/etc/apt/sources.list: No such file or directory
...
chroot: failed to run command '/dpkgdivert': No such file or directory
...
chroot: failed to run command '/postunpack': No such file or directory
...

The application dpkg-divert is installed on my base system which is Uubuntu 16.04. I have not been able to figure out what postunpack is, both ducky and google have not been sufficiently friendly to me on this occasion.

What do I need to do to resolve these errors?

Thanks!