Assistant chat breaks: An error occurred while creating the task

[meonkeys]

⚠️ Before posting ⚠️

• [x] This is a bug, not a question or an enhancement.
• [x] I've searched for similar issues and didn't find a duplicate.
• [x] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• [x] I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

1. touch "Assistant" in android app
2. right-scroll to "Chat" tab
3. hit "+" icon in lower right of screen to start a chat

Expected behaviour

begin chat with AI, similar to Assistant ➡ Chat with AI in nextcloud web ui

Actual behaviour

Error message: An error occurred while creating the task

Android version

/e/ OS 2.8

Device brand and model

Fairphone 4

Stock or custom OS?

Stock

Nextcloud android app version

3.31.0

Nextcloud server version

30.0.7

Using a reverse proxy?

Yes

Android logs

No response

Server error logs

Additional information

Assistant ➡ Chat with AI in nextcloud web ui works as expected