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[GH-ISSUE #7759] [Bug]: Fatal Error when server can't be reached #117574
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Reference: github-starred/actual#117574
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Originally created by @crdavis12 on GitHub (May 8, 2026).
Original GitHub issue: https://github.com/actualbudget/actual/issues/7759
What happened?
Just upgraded from 26.4.0 -> 26.5.1. In the new version I found that when my client can't reach the server it fails to start. I get a message saying:
Fatal Error
There was a problem loading the app in this browser version. Please get in touch for support
Worked fine in 26.4.0
How can we reproduce the issue?
Break connection to the server (or stop the server). Try to open budget.
Server is hosted on Windows.
Multiple clients failing the same way:
Windows+Firefox (same machine as server)
Android+Chrome
Where are you hosting Actual?
Locally via Yarn
What browsers are you seeing the problem on?
Chrome, Firefox
Operating System
Windows 11
@MatissJanis commented on GitHub (May 8, 2026):
Anything in console logs you could share?
@crdavis12 commented on GitHub (May 8, 2026):
Some extra detail from the error screen. Sorry about the formatting.
@MatissJanis commented on GitHub (May 8, 2026):
Is there something more in developer tools (console logs)?
@crdavis12 commented on GitHub (May 11, 2026):
Sorry, I rolled back to 26.4.0 before I could get any other logs.
@MatissJanis commented on GitHub (May 11, 2026):
No worries. I suspect https://github.com/actualbudget/actual/pull/7761 will help highlight the issue better in the future (instead of a fatal error with no explanation). Plus it has retries which will help too.
Closing as we don't have any more info to act on here.
@sys044 commented on GitHub (May 14, 2026):
I host my instance on a local LAN Docker instance, when I am on the same browser but a different network, I see this error error in UI:
Client version: v26.5.2
Server version: v26.5.2
Console:
@sys044 commented on GitHub (May 15, 2026):
@MatissJanis can you reopen this please?
@MatissJanis commented on GitHub (May 15, 2026):
If your instance is hosted on a different network - I am not sure what you expect Actual to do in that case. We can't automagically connect you to the correct local network 🤔
@sys044 commented on GitHub (May 15, 2026):
@MatissJanis, previously the app loaded in the browser regardless and would sync when on the right network, e.g. if I am hosting actual on local DNS and I am switching between WiFi and mobile data, I would expect the application to still be functional without connection to the server. As I said this previously worked so there is definitely a regression, or is this intended behaviour?
This bug also breaks the PWA on iOS in the same scenario as described above. Which is a pretty standard use case IMO