[com.impleoit.ima.member.android] Cardskipper.se app unable to log in, blank error with no text

[bjmc]

Affected app
Name: Cardskipper
Package id: com.impleoit.ima.member.android

Describe the bug
Unable to log in, blank error message

To Reproduce

1. Open the app
2. Click the green "I already have an account" button at the bottom of the screen.
3. Enter email address and password (credentials confirmed valid on https://member.cardskipper.se/login)
4. Click "login", you'll get a blank error as shown in the screenshot

Expected behavior
Expected a successful login

Screenshots

System
Android Version: 13
Custom ROM: /e/OS 2.8-20250225471522-community-beyond0lte

microG
microG Core version: 0.3.6.244735-dirty
microG Self-Check results: Yes, all ticked

Additional context
Attached logcat captured using this filter.

logcat.log