Flathub install fails with "Unable to install Steam: cannot install source from https://dl.flathub.org/repo/: flatpak source flathub already exists"
Flathub install fails with "Unable to install Steam: cannot install source from https://dl.flathub.org/repo/: flatpak source flathub already exists".
Steps to reproduce:
- Go to flathub.org
- Click "Install" on something
- Open file with GNOME Software
- Click "Install" in GNOME software
(it may be necessary to install more than one item to trigger this error)
In this screenshot, you can both see the error message for valve's steam as prompted by GNOME Software, as well as the terminal where I install it manually which worked fine: