mirror of
https://github.com/dani-garcia/vaultwarden.git
synced 2026-08-29 07:45:41 -05:00
[GH-ISSUE #6249] Login error - can't access property "toLowerCase", e.message is undefined #29871
Reference in New Issue
Block a user
Originally created by @mrnetlex on GitHub (Aug 29, 2025).
Original GitHub issue: https://github.com/dani-garcia/vaultwarden/issues/6249
Prerequisites
Vaultwarden Support String
Your environment (Generated via diagnostics page)
Config & Details (Generated via diagnostics page)
Show Config & Details
Failed HTTP Checks:
Config:
Vaultwarden Build Version
1.34.3
Deployment method
Official Container Image
Custom deployment method
Docker compose:
Reverse Proxy
traefik 3.5.1
Host/Server Operating System
Linux
Operating System Version
Ubuntu 24.04 x86
Clients
Web Vault
Client Version
Zen Browser 1.15b (Firefox 142.0), Brave 1.81.137, Chrome 139 Android
Steps To Reproduce
Expected Result
Pop-up asking for FIDO2 authentication with key.
Actual Result
Error saying - can't access property "toLowerCase", e.message is undefined
Logs
Screenshots or Videos
Additional Context
From what I can tell it is connected to use of YubiKeys as FIDO (WebAuthn) 2FA. I'm not certain for how long this error is present - I mostly use extension and Android app. which still work fine.
What I checked:
If deemed necessary I can just setup new instance as it is only for my personal use and I have vault backups.