How to load data returned with spring mvc in an ExtJs grid?

A couple of days ago I look for the solution to my problem and nothing, and that is that I am working with java framework Spring MVC with SQL connection and integrated with Extjs 6.2 I try to load the data that returns spring to me within a grid and nothing, you already think the model, store and grid apparently all good but nothing. to see if someone can help me solve it.

Pojo:

public class Aamon {
    private int codigo;
    private String nombres;
    private String carrera;

    public Aamon() {
    }

    public Aamon(int codigo, String nombres, String carrera) {
        this.codigo = codigo;
        this.nombres = nombres;
        this.carrera = carrera;
    }

    //getter y setter
}

Driver that returns the data in json format.

@ResponseBody
    @RequestMapping(value = "/trabajadores", method = RequestMethod.GET)
    public Map<String, Object> getAllEmployes() {
        Map<String, Object> map = new HashMap<>();

        List<Aamon> list = new ArrayList<>();
        list.add(new Aamon(10, "Oscar", "Sistemas"));
        list.add(new Aamon(20, "Yeghor", "Industrial"));
        list.add(new Aamon(30, "Sheyimi", "Docente"));

        map.put("success", true);
        map.put("message", "Datos encontrados");
        map.put("data", list);

        return map;
    }

My model in extjs:

Ext.define('Pruebita.model.Aamon', {
    extend: 'Ext.data.Model',
    idProperty: 'codigo',
    fields: [
        { name: 'carrerra', type: 'string' },
        { name: 'codigo', type: 'int' },
        { name: 'nombres', type: 'string' }

    ]
});

My store of extjs:

Ext.define('Pruebita.store.Trabajador', {
    extend: 'Ext.data.Store',
    alias: 'store.Strabajador',

    model: 'Pruebita.model.Aamon',
    proxy: {
        type: 'ajax',
        api: {
            read: 'trabajadores'
        },
        paramsAsJson: true,
        reader: {
            rootProperty: 'data',
            type: 'json'
        }
    },
    autoLoad: true

});

My grid extjs:

Ext.define('Pruebita.view.trabajador.TrabajadorList', {
    extend: 'Ext.grid.Panel',
    xtype: 'trabajadorList',

    store: {
        xtype: 'Strabajador'
    },

    columns: [{
            text: 'CODIGO',
            dataIndex: 'codigo',
            flex: 1
        },{
            text: 'NOMBRES',
            dataIndex: 'nombres',
            flex: 1
        },{
            text: 'CARRERA',
            dataIndex: 'carrerra',
            flex: 1
        }
    ]

});

Apparently all functions since calling the grid accesses the Spring driver and returns the following:

But as you can see in the grid the data that is returned is not shown.

Thanks in advance for your help.