Send prompt to OpenAI doesn't work with gpt-4

Hello
I'm having problems with the Send pronpt operator from Generative Models Extension.
The extension works well if I select the default OpenAI model, gpt-3.5 turbo, but when I change the default model to other, for example, gpt-4 the operator doesn't work. @Ingo, can you help me with this issue?

best, 

Cesar