How to fix JSON parsing?

Question

JSON

In general, the problem is as follows: data is received from the site to the server, it needs to be processed correctly. But I can’t parse them in any way, when I try to do this, an error immediately appears, but I can’t use this data in such a JSON format.
Can you suggest what can be done in this situation? Thanks in advance.
Here is the source file itself:

Here is the server code:

Here is the server response:

Answer 1

you already have req.body as an object and you don't need to parse it.
When you do JSON.parse(req.body) you get JSON.parse('[object Object]')