Fluxer Canary fails to start

Observed behaviour

The app should start, but instead it gives the attached screenshot. Stable works just fine, however. Terminal output is attached.

Reproduction steps

Update to 2026.1008.12411
Run fluxer-canary

Build information

Canary Desktop 2026.1008.12411, Linux 7.2.5-200.fc44.x86_64 (x64), Electron 44.4.1, Chrome 152.0.7977.78, Node 24.21.0, Locale en-US

Platform

Linux

Evidence

Stacktrace:

Error: Error invoking remote method 'desktop-runtime-config:resolve': DesktopRuntimeDiscoveryUnreachableError: No usable instance discovery document was served for https://web.canary.fluxer.app/api: https://web.canary.fluxer.app/.well-known/fluxer (connect ECONNREFUSED 2001:19f0:4000:174e::1:443); https://web.canary.fluxer.app/api/.well-known/fluxer (connect ECONNREFUSED 2001:19f0:4000:174e::1:443)

1 comment

FullestReviewer OP1 vote 1h ago

From Hampus:

ah working on a fix the problem is because happy eyeballs is broken disabling IPv6 would be a workarond IPv6 is broken on your network, Chromium automatically resorts to IPv4 then, but my impl didn't

I enabled IPv6 through my mullvad tunnel and now it works fine!