/var/lib/dpkg/info/dist-base-files.postinst: line 9: /usr/libexec/helper-scripts/user_create.bsh: No such file or directory

[Patrick]

This should not be happening.

Users aren’t expected to manually fix this.

We don’t know why this has happened.

Since this was already manually fixed by the user, it seems unlikely that this can be debugged.