Can I work with JSON data containing non-zero values in arrays that produces parse errors?

JSON parse return error when found data != 0
i wrote a simple code to try, i had a server to request the data in JSON…
This is the error:

When the array are full of ‘0’ not appear the error.
i need to save the JSON objet in a const variable, and acces to the data later with "jsonVariable.someData[i]".

function pingMbServer() {
  const mbServer = new XMLHttpRequest();
  mbServer.timeout = 2000;
  mbServer.addEventListener("readystatechange", () => {
      const isDone = mbServer.readyState === 4;
      const isOk = mbServer.status === 200;
      mbServer.onload = function() {
        let arrayData = [];
        const datos = JSON.parse(this.responseText);
        arrayData = datos.almacen;
        alert("Length: "++datos.station.length);
        //...
      }
    }
  }

I try to search some info, but only found this:

Another important thing to keep in mind is that before JSON can be parsed it must first be stringified.

But i cant work with a string, i need to work with objets.
Something that i missed…?