Dumb questions/ Logs / Local gallery / Image generation

[Fraggle-Kong]

Dear all,

probably I got some things wrong.
I'm new to this for a couple of days now and was happy to be able to bring German language to my AI - I love it's rants, it's very entertaining. I use it with Nextcloud.
But now for the dumb questions.
I googled for hours, but either my questions are to dumb for results or I'm too dumb to find proper results.

First: how can I read OpenAI's logs? I installed it according to homepage with docker. Now, it's in the docker container, entertains me, but I don't know how to trouble shoot.
It my very first time with docker.

Isn't it supposed to serve a website to download models on http://myip:8080 ?
I can only use API (I have set up an API key).
Wenn I point my web browser to it, there's only a notice indicating lack of my authorisation key.
Is this intended?
What would I do to access local gallery?
Or has it just the API interface out of the box?

Third dumb question is about image generation.
Although I didn't fiddle around with image generation at all, Nextcloud just shows an Assistant error an Nextcloud's log shows:
"[integration_openai] Warnung: API request error : Server error: POST http://XXX.XXX.XXX.XXX:8080/v1/images/generations` resulted in a 500 Internal Server Error response:
{"error":{"code":500,"message":"rpc error: code = Unavailable desc = error reading from server: EOF","type":""}}

POST /ocs/v2.php/apps/assistant/api/v1/i/process_prompt
von XXX.XXX.XXX.XXX von admin um 01.05.2024, 02:05:56"

`
My machine is capable of AVX2, but not AVX512.
I installed CPU version of OpenAI as it's in a docker container which is in a LXC Container on Proxmox - no GPU available.

Thanks for helping out a newbie!

Christian