Stemio Kubuntu Flatpak

Hi,

I've tried installing on Kubuntu using the flatpak and the .deb file but not having much luck. The .deb file needs dependencies of which I've tried installing with apt.

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package libmpv1
root@*****-allseries:/home/*****/Downloads#