Chat results not displayed due to "Error: Premature close"

[itsec-agentur]

Describe the bug
In a newly setup system, when interacting with the chat bot the the answer of the chat bot is not displayed but an error message.

<title>Error</title>

Error: Premature close
    at IncomingMessage.<anonymous> (/app/node_modules/node-fetch/lib/index.js:1748:18)
    at Object.onceWrapper (node:events:638:28)
    at IncomingMessage.emit (node:events:524:28)
    at emitCloseNT (node:internal/streams/destroy:147:10)
    at process.processTicksAndRejections (node:internal/process/task_queues:81:21)

To Reproduce
Just start chatting, no matter in which module.

Expected behavior
I checked the running processes with
devel-su venhoadactl shell nerdctl ps
All up and running.

I restartet frontend-httpd
to no effect.

Environment(please complete the following information):
Sailfish OS 5.0.0.68 (Tampella)
Venho.ai 0.4.6
Browser: Mozilla LibreWolf 140.0.4-1
Chromium Version 138.0.7204.168 (Official Build, ungoogled-chromium) (64-bit)