Lutris 0.5.21 flatpak not starting

So i updated flatpak version of Lutris to 0.5.21 on Linux Mint 22.3 and after that the Lutris UI would not load anymore.

Not sure if this warning / error means anything :

flatpak run net.lutris.Lutris 
Gtk-Message: 22:50:25.354: Failed to load module "xapp-gtk3-module" Traceback (most recent call last): File "/app/bin/lutris", line 68, in <module> from lutris.gui.application import LutrisApplication File "/app/lib/python3.13/site-packages/lutris/gui/application.py", line 37, in <module> from lutris.api import get_runners, parse_installer_url File "/app/lib/python3.13/site-packages/lutris/api.py", line 20, in <module> from lutris.util import http, system File "/app/lib/python3.13/site-packages/lutris/util/http.py", line 41, in <module> class Request: ...<160 lines>... return "" File "/app/lib/python3.13/site-packages/lutris/util/http.py", line 46, in Request stop_request: threading.Event = None, ^^^^^^^^^ NameError: name 'threading' is not defined. Did you forget to import 'threading'?
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Hello,

I can confirm the same issue on Debian 13 with exactly the same output. That is the flatpak version.
I don’t know what the update was but currently I am unable to start lutris too.
A temporary solution that I can give you is to revert back a version until someone else looks in to the matter.

Same - will not load UI. I’ve downgraded the Flatpak (net.lutris.Lutris) back to 0.5.20
(Linux Mint 22.3)

Same here on mint 22.2

Same here on Bazzite system trying to install beta version of Lutris.

I used this guide to rollback the flatpak version
How to Downgrade Flatpak Packages in Linux

Any ideas what I might be doing wrong?

you missed a capital to net.lutris.Lutris :

sudo flatpak update --commit=19516c28a17c7beb7dd3505322ee451eb4ae2be55ce7a8a61a99487e81d2ff45 net.lutris.Lutris

Still same:

Grok AI helped me, I guess the issue was I had installed both stable and beta version.
But the following commands helped me to downgrade to 0.5.20 version and works.

Commands I used:

  1. sudo flatpak uninstall net.lutris.Lutris//beta
  2. flatpak remote-info --log flathub net.lutris.Lutris//stable (Select user, number: 2)
  3. flatpak update --commit=19516c28a17c7beb7dd3505322ee451eb4ae2be55ce7a8a61a99487e81d2ff45 net.lutris.Lutris//stable

new Lutris version 0.5.22 will fix this issue and will be available soon on Flathub.

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Problem solved. works again. :slight_smile: