Ajax request using Asp . net core

Question

I’m having trouble with this request... It’s returning 'not been' on the console. The getValue() method is in the Controller/Homecontroller.Cs

/* JS */

 var obj = {
        emails: 'teste'
    }

    var json = JSON.stringify(obj)

    $.ajax({
        cache: false,
        type: 'POST',
        url: '/Home/getValue',
        data: json,
        contentType: 'application/json',
        success: (e) => {
            console.log('foi')
        },
        error: (e) => {
            console.log('nao foi')
        }
    })

/* getValue */

[HttpPost]
public ActionResult getValue(string dados) {
 
return View();
}

I also created a class in Models>Testemodel.Cs

public class TestModel {
   public string teste {get; set;}
}

Could you help me? I think the problem might be at the url of ajax... Console error message: POST https://localhost:44355/Home/getValue 500 jquery.min.js:2