Looking in /var/lib/app-info/yaml/archive.ubuntu.com_ubuntu_dists_xenial_universe_dep11_Components-amd64.yml.gz shows no screenshots for catfish or mugshot in the appstream data.
Looking in /var/lib/ app-info/ yaml/archive. ubuntu. com_ubuntu_ dists_xenial_ universe_ dep11_Component s-amd64. yml.gz shows no screenshots for catfish or mugshot in the appstream data.