Hello, I have a problem with the API. When I send a GET request I get a list of posts. And when I try to add a post through a POST request, I get a 400 error. What am I doing wrong, how do I add a post?
[https://stackblitz.com/edit/js-6gaeut?file=index.js](https://stackblitz.com/edit/js-6gaeut?file=index.js)