Although you do not need an Open API account for Ollama, it uses the same API, so you may need to enter a (fake) api key.
Did you try to add a fake API key in the Open AI input field?
I found the problem, thanks to DeepSeek: Even though I have the model installed (as deepseek-r1:8b), wwb program is looking for the exact name deepseek-r1 without the tag.
Then, I need to change it, but I'm sure that it will happend to everybody that need to install if from now.