Hi,
I’m running Ubuntu 26.04 (ARM) and installed the Flatpak version of Anki (25.09.3). The app opens, but the interface shows the error:
“This site can’t be reached”
Note there are no issues with my VPN or network blocking localhost.
Here’s the output I see in the terminal:
Starting Anki 25.09.3…
Trying to use X11, but it is not available. Falling back to Wayland, which has some bugs.
2026-05-09 20:10:20,734: INFO: aqt.mediasrv: somelink Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
Starting main loop…
Fontconfig error: Cannot load default config file: No such file: (null)
JS error /:1 Uncaught TypeError: Cannot read properties of null (reading ‘classList’)
JS error /:1 Uncaught ReferenceError: updateSyncColor is not defined
Fontconfig error: Cannot load default config file: No such file: (null)
Fontconfig error: Cannot load default config file: No such file: (null)
Has anyone else experienced this on Ubuntu 26 with ARM, or have suggestions for fixing the local host connection / UI issues? Thanks
I assume this is the issue. Mediasrv should open a local connection on a socket so that the output reads something like this:
2026-05-09 22:52:56,208:INFO:aqt.mediasrv: Serving on http://127.0.0.1:36511
In your case the socket is missing. You can double check with
file /run/dbus/system_bus_socket
which should print
/run/dbus/system_bus_socket: socket
Maybe dbus is missing on your system. You might be able to solve it with
sudo apt-get install dbus
And for the fontconfig one, maybe the following solves it:
sudo apt-get install fontconfig
Afterwards, it should run. Though I must admit that I only use debian and I never used ARM before.
Edit: Thank you for providing all of that info and using a proper title as well!
Hi, thanks a lot for helping me try debug the issue. Having tried every possible method I just could not get it to work. I recently upgraded from Ubuntu Asahi 24 to 26 and started having these issues. I did try the commands you posted with no success. Normally its quite easy when an app requires x library for you to download it and its dependencies to fix the issue.
I have a feeling the issue is due to some Flatpak quirkiness in relation to its sandbox environment not playing nicely with my unique ARM setup.
I thought having dumped enough time into the issue that the right choice now would be to move away from Flatpak and find an alternative method of installation.
Good old pip came to the rescue and I installed aqt and it works flawlessly. Thanks