Hi, Christophe,
> I installed Element (1) by flatpak, but applications installed by > Flatpak do not appear on the gnome desktop applications menu (even > after reboot). You have to add some paths to XDG_DATA_DIRS. I'm using Guix System, and this is what I do: 1. Add the following to .bash_profile file # MAKE FLATPAK APPLICATION LAUNCHERS AVAILABLE IN GUIX'S GNOME export XDG_DATA_DIRS="$XDG_DATA_DIRS:$HOME/.local/share/flatpak/exports/share" export XDG_DATA_DIRS="$XDG_DATA_DIRS:/var/lib/flatpak/exports/share" Note that I don't know why ".bash_profile" instead of ".profile". I use the former because using the latter never works for me. 2. Restart the GNOME SHELL. You can do this as follows: 2.1 Press Alt + F2 2.2 Enter the letter r 2.3 Press Enter After this, flatpak applications should be listed along with the applications you install with guix. About the error, I don't know. I've experienced other problems with flatpaks though. For example, it is common that some flatpak applications can't access the file system, but some can. Anyways, hope that helps.
