Commenting out the following lines in
/etc/apt/apt.conf.d/10apt-listbugs fixed this issue.

DPkg::Pre-Install-Pkgs {"/usr/sbin/apt-listbugs apt || exit 10"};
DPkg::Tools::Options::/usr/sbin/apt-listbugs "";
DPkg::Tools::Options::/usr/sbin/apt-listbugs::Version "2";