Comment 2 for bug 1919314

apt-utils is not required & this is not a warning (in the sense of an unimportant error), but an information why debconf isn't asking questions to configure all packages upfront at the start of the run, but will ask questions (if any) while the packages are actually installed as needed potentially interrupting the process multiple times waiting for user input who might have decided to take a walk while this lengthy installation process runs to return to a machine having stopped half-way through with a configuration question (not installed) vs. a machine who asked the questions upfront and is now done (installed). The end result doesn't change regardless of apt-utils being installed or not – its just a matter of which way is taken to get there.

(In an ideal world, in reality there are still packages who have to ask questions in the middle of it as those only come up in certain configurations and/or situations and can't be asked upfront).