Validation does not work when performing a custom validation, Express Validator Express

Question

Using Express Validator I need to verify what comes in the request but I always get an error with Express Validator indicating "Invalid value".

This is generated with this code in my route:

        check('detail').not().isEmpty()
        .custom( (value, {req}) => {
            console.log(req.body);
        }),

So I get the error:

I have tried with other routes to do the same thing, capture the request but I always get the same error message.

I appreciate your help.