I opened an issue on Gnome bug tracker too
https://gitlab.gnome.org/GNOME/gnome-shell/issues/29
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https://bugs.launchpad.net/bugs/1739018
Title:
Gnome shell is so
I had the same error. So I installed gnome-software-plugin-flatpak and
flatpak :
$ sudo add-apt-repository ppa:alexlarsson/flatpak && sudo apt update
$ sudo apt install flatpak
But still had the same error. I rebooted and had the install button
(with the other error Martin noticed too on #3). Unf
