Text generated by ckeditor request to claude does not appear

Problem/Motivation

I have installed the module for anthropic provider, setup the api key and enable the ckeditor plugin to generate content with ai claude 3.5 Haiku.

Steps to reproduce

The request goes on perfectly, but I get no answer from ai.
In my claude console, under billing, I can see that I have been charged for that request.
I have tried with openai api key and everything works fine.