Fastmail email alias returning error message "forDomain" cannot be null

[hongyilyu]

Steps To Reproduce

1. Go to Generator Tab
2. Select Username to generate
3. Select Forwarded email alias as Username type
4. Select Fastmail as service provider
5. Input API Key
6. Tap on generate on top right next to copy button

Expected Result

An email alias being generated

Actual Result

Error Message dialog pop up, indicating 'forDoamin' in 'masked email' cannot be null

Screenshots or Videos

Additional Context

No response

Build Version

2024.12.0(1740)

What server are you connecting to?

US

Self-host Server Version

No response

Environment Details

Device: iPhone 15 PM
iOS version: 18.1.1

Issue Tracking Info

• I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.