ChatGPT transform & replace selection not working with custom API

This is a simple problem. I have created and inserted a secret key from openAI hoping to use gpt-4. But when I use it, I get a "(null)" response when attempting to trigger the shortcut. For example, I have highlighted the text: "what is the capitol of Vermont?" and it responds "(null)", inserting the response after the selected text.

What is the capitol of Vermont?


Don't know what else I can change to fix this.
Help please! thank you!

which version of BTT are you running? (there was a recent fix related to custom models)

Let's see... 4.361 (43610). Just updated. And I'll reboot the computer now too. We'll see if one of those things works.

Nope. Still giving me (null).
Thanks for your help, @Andreas_Hegenberg.