Bug: Can't login

[lukakiro]

I can't log in, neither using Oauth Client ID nor using Personal Access Token.

1. I write the Firefly III backend URL: https://firefly......dev
2. I put the OAuth Client ID
3. When I press the button to Login I get redirected to the firefly web app.
4. I press authorize
5. I get redirected to the Abacus app with a modal error: Error: JSON Parse error: Unexpected character : Y
   
   

If I use the personal access token the error message says: Error: Request failed with status code 403, but I don't see any request made to the firefly instance

Smartphone (please complete the following information):

• Device: OnePlus Nord 2 5G
• OS: Android 13
• Version 0.20.1

I tried reading the android logcat, but I don't see any error message except for
IPCThreadState: attemptIncStrongHandle(88): Not supported

What can I do to get more details?