# Unexpected error has occurred when changing login w/ FF plugin

**URL:** <https://vaultwarden.discourse.group/t/unexpected-error-has-occurred-when-changing-login-w-ff-plugin/4936>\
**Category:** Help\
**Created:** [February 5, 2026, 7:55pm UTC](https://vaultwarden.discourse.group/t/unexpected-error-has-occurred-when-changing-login-w-ff-plugin/4936 "2026-02-05T19:55:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mdiehl](https://avatars.discourse-cdn.com/v4/letter/m/f6c823/32.png) [@mdiehl](https://vaultwarden.discourse.group/u/mdiehl)\
**Post date:** [February 5, 2026, 7:55pm UTC](https://vaultwarden.discourse.group/t/unexpected-error-has-occurred-when-changing-login-w-ff-plugin/4936/1 "2026-02-05T19:55:32Z")

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When I try to update a login using the Firefox bitwarden extension, I get an error pop-up that indicates that an unexpected error has occurred.

I’m running vault warden in a docker container. When I encounter the error, I get this in the server’s logs:

[2026-02-05 19:44:58.314][request][INFO] GET /api/tasks  
[2026-02-05 19:44:58.314][rocket::response::responder::_][WARN] Response was None.  
[2026-02-05 19:44:58.314][rocket::server::_][WARN] Responding with registered (api\_not\_found) /api 404 catcher.  
[2026-02-05 19:44:58.314][response][INFO] (web\_files) GET /\<p..\> [10] =\> 404 Not Found  
[2026-02-05 19:44:59.251][request][INFO] GET /alive  
[2026-02-05 19:44:59.251][response][INFO] (alive) GET /alive =\> 200 OK

It seems like the change is committed to the database because when I reload…

Anyway, what can I do to get rid of this error message?

Mike.

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**Author:** ![stefan0xC](https://yyz2.discourse-cdn.com/free1/user_avatar/vaultwarden.discourse.group/stefan0xc/32/1765_2.png) [@stefan0xC](https://vaultwarden.discourse.group/u/stefan0xC)\
**Post date:** [February 6, 2026, 1:26am UTC](https://vaultwarden.discourse.group/t/unexpected-error-has-occurred-when-changing-login-w-ff-plugin/4936/2 "2026-02-06T01:26:46Z")

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What version of Vaultwarden are you running? Given that the `/api/tasks` endpoint does appear to be missing I am suspecting that you are running an outdated version, so make sure you update to the latest release.

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**Author:** ![mdiehl](https://avatars.discourse-cdn.com/v4/letter/m/f6c823/32.png) [@mdiehl](https://vaultwarden.discourse.group/u/mdiehl)\
**Post date:** [February 6, 2026, 10:26pm UTC](https://vaultwarden.discourse.group/t/unexpected-error-has-occurred-when-changing-login-w-ff-plugin/4936/3 "2026-02-06T22:26:36Z")

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It looks like updating the server fixed it. I tried to update before posting, but docker hub wanted me to login… I was tired..

Thanks for the timely (and accurate) reply

Mike.